PHP: strspn() function

Last update on October 04 2024 10:47:01 (UTC/GMT +8 hours)

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

string_strspn

Example:

<?php
$string1='W3RESOURCE';
echo strspn($string1, 'W3Res');
?>

Output:

See also

PHP Function Reference

Previous: strrpos
Next: strstr