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strpos> <strncmp
[edit] Last updated: Fri, 22 Jul 2011

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strpbrk

(PHP 5)

strpbrkSearch a string for any of a set of characters

Description

string strpbrk ( string $haystack , string $char_list )

strpbrk() searches the haystack string for a char_list.

Parameters

haystack

The string where char_list is looked for.

char_list

This parameter is case sensitive.

Return Values

Returns a string starting from the character found, or FALSE if it is not found.

Examples

Example #1 strpbrk() example

<?php

$text 
'This is a Simple text.';

// this echoes "is is a Simple text." because 'i' is matched first
echo strpbrk($text'mi');

// this echoes "Simple text." because chars are case sensitive
echo strpbrk($text'S');
?>



strpos> <strncmp
[edit] Last updated: Fri, 22 Jul 2011
 
add a note add a note User Contributed Notes strpbrk
root at mantoru dot de 07-Feb-2008 03:55
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;
}
?>
pzb at novell dot com 28-Jul-2007 11:09
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 04-Jul-2007 03:33
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 07:25
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 09:54
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 08:11
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

 
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