mb_ereg_replace

(PHP 4 >= 4.2.0, PHP 5)

mb_ereg_replace — Replace regular expression with multibyte support

Descrizione

string mb_ereg_replace ( string $pattern , string $replacement , string $string [, string $option ] )

Scans string for matches to pattern , then replaces the matched text with replacement

Elenco dei parametri

pattern

The regular expression pattern.

Multibyte characters may be used in pattern .

replacement

The replacement text.

string

The string being checked.

option

Matching condition can be set by option parameter. If i is specified for this parameter, the case will be ignored. If x is specified, white space will be ignored. If m is specified, match will be executed in multiline mode and line break will be included in '.'. If p is specified, match will be executed in POSIX mode, line break will be considered as normal character. If e is specified, replacement string will be evaluated as PHP expression.

Valori restituiti

The resultant string on success, or FALSE on error.

Note

Nota: La codifica interna o la codifica dei caratteri specificata da mb_regex_encoding() sarà utilizzata come codifica ei caratteri per questa funzione.

Vedere anche:

mb_ereg_search_getpos

mb_ereg_match

Last updated: Fri, 18 Jul 2008

add a note User Contributed Notes
mb_ereg_replace

keizo at gomo dot jp
23-Jul-2008 09:32


<?php


$pattern = "([あ-ん]+)[0-9]+";


$string = mb_ereg_replace($pattern, '「\\1」:\\0', $string);


?>





you can use \\n for capture group in replacement

gmx dot net at ulrich dot mierendorff
01-Jul-2008 07:39


If you want to replace characters like "ä" or "ø" you can use mb_ereg_replace, but it is very slow. str_replace is much faster and also works with characters like "ä" or "ø"!



I think this has something to with the fact that str_replace works on byte level and does not care about characters.

I hope that can help.

04-Dec-2006 08:36


'i' option does not work correctly with multibyte characters. The function does not locate/replace the multibyte string if it's different case then specified on multibyte needle which is in different case.

squeegee
01-Nov-2006 07:41


well, if you just calculated the length of the find and replace strings once instead of on every loop, it would likely speed it up a lot.

mpnicholas [@t] gmail (dot) com
09-Jul-2006 03:09


Regarding the mb_str_ireplace() function: I benchmarked it against mb_eregi_replace() for single-character substitution, and it was significantly slower. Despite avoiding the ereg call, I think the while loop ends slowing you down too much for this to be practical.

vondrej(at)gmail(dot)com
26-Feb-2006 03:47


Are you looking for htmlentities() for multibyte strings? This might help you - it just replace <, >, ", '



/**

 *  Multibyte equivalent for htmlentities() [lite version :)]

 *

 * @param string $str

 * @param string $encoding

 * @return string

 **/

function mb_htmlentities($str, $encoding = 'utf-8') {

    mb_regex_encoding($encoding);

    $pattern = array('<', '>', '"', '\'');

    $replacement = array('&lt;', '&gt;', '&quot;', '&#39;');

    for ($i=0; $i<sizeof($pattern); $i++) {

        $str = mb_ereg_replace($pattern[$i], $replacement[$i], $str);

    }

    return $str;

}

faxe at neostrada dot pl
09-Aug-2005 03:52


A simple mb_str_ireplace() implementation - a faster (?) replacement for non-regexp multi-byte string replacement:



[code]

function mb_str_ireplace($co, $naCo, $wCzym)

{

    $wCzymM = mb_strtolower($wCzym);

    $coM    = mb_strtolower($co);

    $offset = 0;

    

    while(($poz = mb_strpos($wCzymM, $coM, $offset)) !== false)

    {

        $offset = $poz + mb_strlen($naCo);

        $wCzym = mb_substr($wCzym, 0, $poz). $naCo .mb_substr($wCzym, $poz+mb_strlen($co));

        $wCzymM = mb_strtolower($wCzym);

    }

    

    return $wCzym;

}[/code]

add a note

mb_ereg_search_getpos

mb_ereg_match

Last updated: Fri, 18 Jul 2008