Hướng dẫn php comma

Biến chuỗi thành mảng và biến mảng thành chuỗi được ngăn cách bởi dấu phẩy "," (hay comma) trong PHP thì làm như thế nào? (How to transform array to comma separated words string, or string with comma to array?)

Tôi có mảng như thế này:

Array( [0] => lorem
[1] => ipsum
[2] => dolor
[3] => sit
[4] => amet
)

Yêu cầu sử dụng PHP để biến mảng trên(array) thành chuỗi (string) có dạng như sau:

$string = 'lorem, ipsum, dolor, sit, amet';

Để giải quyết vấn đề này trong PHP ta dùng hàm implode :

$arr = array ( 0 => "lorem", 1 => "ipsum", 2 => "dolor"); $str = implode (", ", $arr);

Ngược lại vấn đề tôi có 1 chuỗi(string), yêu cầu sử dụng PHP để biến chuỗi đó thành mảng (array)

$string = 'lorem, ipsum, dolor, sit, amet';

Để giải quyết vấn đề này trong PHP ta dùng hàm explode :

$string = 'lorem, ipsum, dolor, sit, amet'; $arr= explode (", ", $string);

Chúc các bạn thành công! 

In PHP, I have an array of variables that are ALL strings. Some of the values stored are numeric strings with commas.

Nội dung chính

• How to remove comma from numbers in php?
• How do you remove the comma at the end of a string?
• How do I remove a comma from a string in Excel?

What I need:

A way to trim the commas from strings, and ONLY do this for numeric strings. This isn't as straightforward as it looks. The main reason is that the following fails:

$a = "1,435";

if(is_numeric($a))
    $a = str_replace(',', '', $a);

This fails because $a = "1435" is numeric. But $a = "1,435" is not numeric. Because some of the strings I get will be regular sentences with commas, I can't run a string replace on every string.

asked Feb 17, 2012 at 20:24

user1082428user1082428

1,0213 gold badges12 silver badges14 bronze badges

1

Do it the other way around:

$a = "1,435";
$b = str_replace( ',', '', $a );

if( is_numeric( $b ) ) {
    $a = $b;
}

answered Feb 17, 2012 at 20:29

1

The easiest would be:

$var = intval(preg_replace('/[^\d.]/', '', $var));

or if you need float:

$var = floatval(preg_replace('/[^\d.]/', '', $var));

answered Apr 7, 2015 at 17:24

JayelaJayela

3451 gold badge4 silver badges7 bronze badges

2

Not tested, but probably something like if(preg_match("/^[0-9,]+$/", $a)) $a = str_replace(...)

answered Feb 17, 2012 at 20:28

KenaniahKenaniah

5,12323 silver badges27 bronze badges

3

It sounds like the ideal solution for what you're looking for is filter_var():

$a = filter_var($a, FILTER_VALIDATE_FLOAT, FILTER_FLAG_ALLOW_THOUSAND);

(Note that it's using FILTER_VALIDATE_FLOAT instead of FILTER_VALIDATE_INT because that one doesn't currently have a FILTER_FLAG_ALLOW_THOUSAND option).

answered Aug 26, 2019 at 22:02

orrdorrd

8,8794 gold badges36 silver badges30 bronze badges

0

Try this .this worked for me

number_format(1235.369,2,'.','')

if you use number_format like this number_format(1235.369,2) answer will be 1,235.37

but if you use like below

number_format(1235.369,2,'.','') answer will be 1235.37

it's removing the "," of "1,235.37"

Meloman

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answered Sep 6, 2017 at 6:20

kaushikaushi

1531 silver badge5 bronze badges

1

 function cleanData($a) {

     if(is_numeric($a)) {

     $a = preg_replace('/[^0-9,]/s', '', $a);
     }

     return $a;

}

answered Feb 17, 2012 at 20:30

RyanRyan

14.1k8 gold badges60 silver badges102 bronze badges

1

If you want to remove commas from numbers inside a string that also contains words, the easiest way I think would be to use preg_replace_callback:

Example:  

$str = "Hey hello, I've got 12,500 kudos for you, spend it well"

function cleannr($matches)
{
    return str_replace("," , "" , $matches["nrs"]);
}

$str = preg_replace_callback ("/(?P[0-9]+,[0-9]+)/" , "cleannr" , $str);

Output:

"Hey hello, I've got 12500 kudos for you, spend it well"

In this case the pattern (regex) differs from the one given in the accepted answer since we don't want to remove the other commas (punctuation).

If we'd use /[0-9,]+/ here instead of /[0-9]+,[0-9]+/ the output would be:

"Hey hello I've got 12500 kudos for you spend it well"

answered Sep 6, 2017 at 19:11

FlaxiousFlaxious

1011 silver badge3 bronze badges

How about this:

/**
 * This will parse the money string
 * 
 * For example 1, 234, 456.00 will be converted to 123456.00
 * 
 * @return 
 */
function parseMoney(string $money) : float
{
    $money = preg_replace('/[ ,]+/', '', $money);
    return number_format((float) $money, 2, '.', '');
}

Example;

parseMoney('-1, 100,   000.01'); //-1100000.01

answered Jul 16 at 20:16

Emeka MbahEmeka Mbah

15.7k8 gold badges71 silver badges93 bronze badges

How to remove comma from numbers in php?

remove comma in numeric in php.

$var = 18,542.00;.

$var = intval(preg_replace('/[^\d. ]/', '', $var));.

result :- 18542;.

or if you need float..

$var = floatval(preg_replace('/[^\d. ]/', '', $var));.

result :- 18542.00;.

How do you remove the comma at the end of a string?

Using the substring() method We remove the last comma of a string by using the built-in substring() method with first argument 0 and second argument string. length()-1 in Java. Slicing starts from index 0 and ends before last index that is string. length()-1 .

How do I remove a comma from a string in Excel?

Remove comma from Text String.

Select the dataset..

Click the Home tab..

In the Editing group, click on the Find & Replace option..

Click on Replace. This will open the Find and Replace dialog box..

In the 'Find what:' field, enter , (a comma).

Leave the 'Replace with:' field empty. ... .

Click on Replace All button..