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strcspn

strcspn

Find length of initial segment not matching mask

int **strcspn** string $string string $characters int $offset  $length

Returns the length of the initial segment of which does contain any of the characters in . stringnotcharacters

If and are omitted, then all of will be examined. If they are included, then the effect will be the same as calling (see for more information). offset``length``string``strcspn(substr($string, $offset, $length), $characters)

stringThe string to examine.

charactersThe string containing every disallowed character.

offset The position in to start searching. string

   If  is given and is non-negative,
   then  will begin
   examining  at
   the 'th position. For instance, in
   the string '', the character at
   position  is '', the
   character at position  is
   '', and so forth.
  `offset``strcspn``string``offset``abcdef``0``a``2``c`


   If  is given and is negative,
   then  will begin
   examining  at
   the 'th position from the end
   of .
  `offset``strcspn``string``offset``string`

length The length of the segment from to examine. string

   If  is given and is non-negative,
   then  will be examined
   for  characters after the starting
   position.
  `length``string``length`


   If  is given and is negative,
   then  will be examined from the
   starting position up to 
   characters from the end of .
  `length``string``length``string`

Returns the length of the initial segment of which consists entirely of characters in . stringnotcharacters

Opmerking: > When a parameter is set, the returned length is counted starting from this position, not from the beginning of . offset``string

Voorbeeld: example

<?php
$a = strcspn('banana', 'a');
$b = strcspn('banana', 'abcd');
$c = strcspn('banana', 'z');
$d = strcspn('abcdhelloabcd', 'a', -9);
$e = strcspn('abcdhelloabcd', 'a', -9, -5);

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

int(1)
int(0)
int(6)
int(5)
int(4)

strspn

Vorige ← strcoll Volgende strip_tags →

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