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PHP strspn() Function

PHP String Reference Complete PHP String Reference

Definition and Usage

The strspn() function returns the number of characters found in the string that contains only characters from the charlist.

Syntax

strspn(string,charlist,start,length)

Parameter Description
string Required. Specifies the string to search
charlist Required. Specifies the characters to find
start Optional. Specifies where in the string to start
length Optional. Defines the length of the string

Tips and Notes

Note: This function is binary safe.

Example 1

<?php
echo strspn("Hello world!","kHlleo");
?>

The output of the code above will be:

5

Example 2

<?php
echo strspn("abcdefand","abc");
?>

The output of the code above will be:

3

PHP String Reference Complete PHP String Reference
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