(PHP 3>= 3.0.3, PHP 4 , PHP 5)
strcspn --
Find length of initial segment not matching mask
Description
int
strcspn ( string str1, string str2 [, int start [, int length]])
Returns the length of the initial segment of
str1 which does not
contain any of the characters in str2.
As of PHP 4.0B1 this function is binary safe.
Additionally it accepts two optional integer
parameters that can be used to define the starting position
and the length of the string to examine.
See also strspn().