strncmp
A simpler (and slightly faster) strpbrkpos function:
<?php
function strpbrkpos($haystack, $char_list) {
$result = strcspn($haystack, $char_list);
if ($result != strlen($haystack)) {
return $result;
}
return false;
}
?>
strpbrk
(PHP 5)
strpbrk — Buscar una cadena por cualquiera de los elementos de un conjunto de caracteres
Descripción
string strpbrk
( string $pajar
, string $lista_caracteres
)
strpbrk() busca la cadena pajar por una lista_caracteres .
Lista de parámetros
- pajar
-
La cadena en donde lista_caracteres es buscada.
- lista_caracteres
-
Este parámetro es sensible a mayúsculas y minúsculas.
Valores retornados
Devuelve una cadena que empieza desde el caracter encontrado, o FALSE si no se encuentra.
Ejemplos
Example #1 Ejemplo de strpbrk()
<?php
$texto = 'Este es un texto Simple.';
// esto imprime "e es un texto Simple." ya que 'e' coincide primero
echo strpbrk($texto, 'me');
// esto imprime "Simple." ya que los caracteres son sensibles a mayúsculas/minúsculas
echo strpbrk($texto, 'S');
?>
add a note
User Contributed Notesstrpbrk
root at mantoru dot de
07-Feb-2008 07:55
07-Feb-2008 07:55
pzb at novell dot com
28-Jul-2007 04:09
28-Jul-2007 04:09
One undocumented requirement:
If $char_list contains null characters ("\0"), only characters before the null will be used. While PHP handles nulls in strings just fine, the data is passed to a function that is not null safe.
Evan
03-Jul-2007 08:33
03-Jul-2007 08:33
If you're not looking to duplicate the rest of the string, but instead just want the offset, in the spirit of the str*pos() functions:
<?php
function strpbrkpos($s, $accept) {
$r = FALSE;
$t = 0;
$i = 0;
$accept_l = strlen($accept);
for ( ; $i < $accept_l ; $i++ )
if ( ($t = strpos($s, $accept{$i})) !== FALSE )
if ( ($r === FALSE) || ($t < $r) )
$r = $t;
return $v;
}
?>
user at example dot net
03-Jul-2007 12:25
03-Jul-2007 12:25
For PHP versions before 5:
<?php
function strpbrk( $haystack, $char_list )
{
$strlen = strlen($char_list);
$found = false;
for( $i=0; $i<$strlen; $i++ ) {
if( ($tmp = strpos($haystack, $char_list{$i})) !== false ) {
if( !$found ) {
$pos = $tmp;
$found = true;
continue;
}
$pos = min($pos, $tmp);
}
}
if( !$found ) {
return false;
}
return substr($haystack, $pos);
}
?>
Sadly this is about ten times slower than the native implementation.
jamie dot mcardle at stpetersgv dot org
07-Jun-2007 02:54
07-Jun-2007 02:54
I wanted to use this function to look for an @ in a db entry - didn't work because I don't have this version of PHP yet, but I thought I had my issue licked. Darn it.
aidan at php dot net
21-Aug-2004 01:11
21-Aug-2004 01:11
This functionality is now implemented in the PEAR package PHP_Compat.
More information about using this function without upgrading your version of PHP can be found on the below link:
http://pear.php.net/package/PHP_Compat