PHP: strspn() function
PHP: Finds the length of the initial segment of a string consisting entirely of characters contained within a given mask
The strspn() function is used to find the length of the initial segment of a string which matches characters from a second string.
Version:
(PHP 4 and above)
Syntax:
strspn(main_string, search_string, start_position, length)
Parameters:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| main_string | The first string. | Required | String |
| search_string | The searched string. | Required | String |
| start_position | Sets the starting position of the first string. Negative value counts position from the end of main_string. | Optional | Integer |
| length | Sets the no. of characters to be checked in the main_string. | Optional | Integer |
Return value:
Returns the length of the initial segment of main_string.
Value Type: Integer
Pictorial Presentation
Example:
<?php
$string1='W3RESOURCE';
echo strspn($string1, 'W3Res');
?>
Output:
3
View the example in the browser
See also