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Hướng dẫn which are valid php error handling keywords - là những từ khóa xử lý lỗi php hợp lệ

Ngày đăng: 18/10/2022
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    Đọc
    PHP provides following specialized keywords for this purpose.

    • Bàn luận It represent block of code in which exception can arise.
    • Một ngoại lệ là kết quả chương trình bất ngờ có thể được xử lý bởi chính chương trình. Xử lý ngoại lệ trong PHP gần như tương tự như xử lý ngoại lệ trong tất cả các ngôn ngữ lập trình.php cung cấp các từ khóa chuyên dụng sau cho mục đích này. It represent block of code that will be executed when a particular exception has been thrown.
    • Hãy thử: Nó đại diện cho khối mã trong đó ngoại lệ có thể phát sinh. It is used to throw an exception. It is also used to list the exceptions that a function throws, but doesn’t handle itself.
    • Catch: Nó đại diện cho khối mã sẽ được thực thi khi một ngoại lệ cụ thể đã được ném. It is used in place of catch block or after catch block basically it is put for cleanup activity in PHP code.

    Ném: Nó được sử dụng để ném một ngoại lệ. Nó cũng được sử dụng để liệt kê các ngoại lệ mà một hàm ném, nhưng không tự xử lý.
    Following are the main advantages of exception handling over error handling

    • Cuối cùng: Nó được sử dụng thay cho khối bắt hoặc sau khi bắt khối về cơ bản nó được đặt cho hoạt động dọn dẹp trong mã PHP. In traditional error handling code there is always if else block to handle errors. These conditions and code to handle errors got mixed so that becomes unreadable. With try Catch block code becomes readable.
    • Tại sao xử lý ngoại lệ trong PHP? Sau đây là những lợi thế chính của việc xử lý ngoại lệ đối với xử lý lỗi In PHP both basic types and objects can be thrown as exception. It can create a hierarchy of exception objects, group exceptions in namespaces or classes, categorize them according to types.

    Tách mã xử lý lỗi khỏi mã thông thường: Trong mã xử lý lỗi truyền thống, luôn luôn có khối khác để xử lý lỗi. Những điều kiện và mã này để xử lý các lỗi đã được trộn lẫn để không thể đọc được. Với việc thử Catch Block mã trở nên dễ đọc.

    • Nhóm các loại lỗi: Trong PHP, cả hai loại cơ bản và đối tượng đều có thể được ném làm ngoại lệ. Nó có thể tạo ra một hệ thống phân cấp của các đối tượng ngoại lệ, ngoại lệ nhóm trong các không gian tên hoặc các lớp, phân loại chúng theo các loại.

      Xử lý ngoại lệ trong PHP:

      Mã sau đây giải thích dòng chảy của khối thử bình thường trong PHP:

      function demo(______7

          ____10 

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      1
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

          

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      4 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      5

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      5

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      8
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      1
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      222 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      4

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

          234) {

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      8 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      9 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      0
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      1
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      2

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      5
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 894function1

      demo(0

      demo(1

      Output:

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)


    •  Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 function6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

      Xử lý ngoại lệ trong PHP:

      Mã sau đây giải thích dòng chảy của khối thử bình thường trong PHP:

      function demo(______7

          ____10 

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      1
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

          

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      4 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      5

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      8
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      1
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      222 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      4

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

          234) {

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      8 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      9 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      0
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      1
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      2

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

          

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      11

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      5
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 894function1

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      function9

      demo(0

      demo(1

      Output:

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)


    •  Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 function6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

      function9

      Mã sau giải thích dòng chảy bình thường và cuối cùng chặn trong PHP

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      1
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      222 ) {2

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      41
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      42
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      38
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      39
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      45

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      38
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      39
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      49
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      50
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0     1
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 8 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0544____51

      function demo(______7

          ____10 

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      1
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

          

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      4 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      5

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      8
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      1
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      222 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      4

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      function9

      demo(0

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      95

      Output:

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero


    • Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      8 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      9 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      0
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      1
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      2       The set_exception_handler() function set all user defined function to all uncaught exception.

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      5
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 894function1

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      08
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      09
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      2

      Xử lý ngoại lệ trong PHP:

      Mã sau đây giải thích dòng chảy của khối thử bình thường trong PHP:

      function demo(______7

          ____10 

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      1
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

          

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      4 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      5

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      5

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      8
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      1
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      222 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      4

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      8 
      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      9 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      0
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      1
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      2

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 
       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      5
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      7
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 894function1

       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      0 function6
       Before try block
 Inside try block
 Here cleanup activity will be done
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 Here cleanup activity will be done
 After catch (will be always executed)
      2

      function9

          

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred
      8

      function9

      demo(0

      Error on line 20 in /home/45ae8dc582d50df2790517e912980806.php0 is number zero
      80

      demo(1

      Output:

       Before try block
 Inside try block
 After catch (will be always executed)
 Before try block
 Inside try block
 Exception CaughtNumber is zero.
 After catch (will be always executed)
 Before try block
 Inside try block
 After catch (will be always executed)
 Exception: Uncaught Exception occurred


    MCQ từ khóa xử lý lỗi PHP hợp lệ nào?

    OutofBoundException, OutofRangeException, OverflowException, UnderFlowException là ngoại lệ hợp lệ trong PHP. are valid exceptions in PHP.

    Xử lý ngoại lệ trong PHP với ví dụ là gì?

    Xử lý ngoại lệ là một cơ chế mạnh mẽ của PHP, được sử dụng để xử lý các lỗi thời gian chạy (lỗi thời gian chạy được gọi là ngoại lệ).Để dòng chảy bình thường của ứng dụng có thể được duy trì.Mục đích chính của việc sử dụng xử lý ngoại lệ là duy trì việc thực hiện ứng dụng bình thường.a powerful mechanism of PHP, which is used to handle runtime errors (runtime errors are called exceptions). So that the normal flow of the application can be maintained. The main purpose of using exception handling is to maintain the normal execution of the application.

    Các trường hợp ngoại lệ được xử lý trong PHP như thế nào?

    Khi một ngoại lệ được ném, mã theo sau nó sẽ không được thực thi và PHP sẽ cố gắng tìm khối "bắt" phù hợp.Nếu một ngoại lệ không bị bắt, một lỗi gây tử vong sẽ được đưa ra với một thông báo "ngoại lệ chưa được thực hiện".. If an exception is not caught, a fatal error will be issued with an "Uncaught Exception" message.

    Trình xử lý lỗi và lỗi là gì?

    Các tác vụ của quy trình xử lý lỗi là phát hiện từng lỗi, báo cáo cho người dùng và sau đó thực hiện một số chiến lược khôi phục và thực hiện chúng để xử lý lỗi.Trong toàn bộ thời gian xử lý quá trình này của chương trình không nên chậm.Chức năng của trình xử lý lỗi: Phát hiện lỗi.Báo cáo lỗi.detect each error, report it to the user, and then make some recovery strategy and implement them to handle the error. During this whole process processing time of the program should not be slow. Functions of Error Handler: Error Detection. Error Report.

    programming php Custom exception PHP Exception PHP

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