Write a php function that checks whether a string is all lowercase

PHP function: Exercise-5 with Solution

Write a PHP function that checks whether a string is all lower case.

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Sample Output:

bool[true]                                                  
bool[false]

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Given a string, check if all characters of it are in lowercase.
Examples: 
 

Input  : gfg123
Output : No
Explanation : There are characters
'1', '2' and '3' that are not lower-
case

Input  : geeksforgeeks
Output : Yes
Explanation : The string "geeksforgeeks" 
consists of all lowercase letters.

The above problem can be solved using the in-built functions in PHP. We store multiple values in an array and check using the in-built function in php to check whether all the characters are lowercase.
 

We solve the given problem using the in-built functions in PHP and iterate from a given array of strings.We use the following in-built function in PHP: 

• ctype_lower : Returns true if all of the characters in the provided string, text, are lowercase letters. Otherwise returns false.

PHP

Output : 

No
Yes
No