php man page for strcspn

STRCSPN(3)								 1								STRCSPN(3)

strcspn - Find length of initial segment not matching mask

SYNOPSIS
       int strcspn (string  $str1, string  $str2, [int	$start], [int  $length])

DESCRIPTION
	Returns the length of the initial segment of $str1 which does not contain any of the characters in $str2.

PARAMETERS
	      o $str1
		- The first string.

	      o $str2
		- The second string.

	      o $start
		- The start position of the string to examine.

	      o $length
		- The length of the string to examine.

RETURN VALUES
	Returns the length of the segment as an integer.

EXAMPLES
       Example #1

	      strcspn(3) example

	      <?php
	      $a = strcspn('abcd',  'apple');
	      $b = strcspn('abcd',  'banana');
	      $c = strcspn('hello', 'l');
	      $d = strcspn('hello', 'world');

	      var_dump($a);
	      var_dump($b);
	      var_dump($c);
	      var_dump($d);
	      ?>

	      The above example will output:

	      int(0)
	      int(0)
	      int(2)
	      int(2)

NOTES
       Note

	      This function is binary-safe.

SEE ALSO
       strspn(3).

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