JString::strcspn

UTF-8 aware alternative to strcspn Find length of initial segment not matching mask

Signature

public function strcspn(string
        $str,
            [string
        $mask = null,
            [integer
        $start = null,
            [integer
        $length = null]]] )

Parameters

$str: The string to process
$mask: The mask
$start: Optional starting character position (in characters)
$length: Optional length

Returns

integer: The length of the initial segment of str1 which does not contain any of the characters in str2