strspn
(PHP 3 >= 3.0.3, PHP 4, PHP 5)
strspn -- Find length of initial segment matching mask
Description
int
strspn ( string str1, string str2 [, int start [, int length]] )
Finds the length of the initial segment matching mask.
The line of code:
will assign 2 to
$var, because the string "42" will
be the longest segment containing characters from "1234567890".
Parameters
str1
The first string.
str2
The second string.
start
The start position of the string to examine.
length
The length of the string to examine.
Return Values
Returns the length of the initial segment of str1
which consists entirely of characters in str2.
Examples
Example 1. strspn() example
<?php
echo strspn("foo", "o", 1, 2); // 2
?>
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Notes
Note: This function is
binary-safe.