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PHP : Function Reference : String Functions : strspn

strspn

Find length of initial segment matching mask (PHP 4, PHP 5)
int strspn ( string str1, string str2 [, int start [, int length]] )

Example 2465. strspn() example

<?php
echo strspn("foo", "o", 1, 2); // 2
?>

Related Examples ( Source code ) » strspn



Code Examples / Notes » strspn

b crawford

This function is significantly faster for checking illegal characters than the equivalent preg_match() method.

raz

chek a word for ligal characters,
ex:
<?php
$word="abcdef";
$valid_chars="abcdefghijklmnopqrstuvwxyz";
if(strspn($word,$valid_chars) != strlen($word)){
// do some thing here
$error="this word $word contain an illegal chars!";
}
?>


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