preg_replace() with /i modifier

[CHeeSeBLiND]

use eregi_replace() or preg_replace() with the /i modifier instead

i dont understand how i can use this...

can some explain how this would work if my variables are $search, $replace and $text?

[Chris82]

Hi!

The /i modifier stands for case insensitive. Capitalization and small letters are ignored.

So searching for

$var = "search";
preg_match("/SeArCh/i", $var);

would match.

preg_match("/SEARCH/", $var);

instead would not.

[CHeeSeBLiND]

so would preg_replace(/$search/i,$replace,$text) work?

[Chris82]

At a guess I would say so. Not absolutely sure, though.

[CHeeSeBLiND]

does any body know how i could do it using $search as the search string, $replace as the replacement string and $text as the string being searched?

[Chris82]

This searches the variable text for the contents of the variable $search and replaces it with the contents of the variable $replace

$text = preg_replace("/$search/i",$replace,$text);

Or do you want to search for "$search" ie finding the dollarsign and then the word sign?

[CHeeSeBLiND]

i keep getting this error:

Warning: Compilation failed: unmatched parentheses at offset 1 in /home/randompc/public_html/mumblingjoe/inc/functions.inc on line 109

Warning: Compilation failed: missing ) at offset 2 in /home/randompc/public_html/mumblingjoe/inc/functions.inc on line 109


code (109 is the preg_replace() line):

$text = stripslashes($text);
$text = str_replace("\n","<br>",$text);

if ($smilies == "1") {

    $sql = "SELECT * FROM smilies";
    $result = mysql_query($sql);

    while ($row = mysql_fetch_array($result)) {

        $search = $row[emoticon];
        $replace = $row[smilie];
        $replace = "<img src = [url]http://mumblingjoe.randompc.com/img/smilies/[/url]$replace>";

        [b]$text = preg_replace("/$search/i",$replace,$text);[/b]

    }

} 

[Chris82]

There are several characters that have a special meaning when using regexp.

Some of them are \ ( ) [ ] . ? * + { } |

Since you are searching for emoticons that look probably like this
you have to escape them in the search string.

So to search for "" the variable $search must be ":\)"

You have to escape every character mentioned above with a "\" then it should work.

[Chris82]

To save you a bit trouble try this for the line:

old: $search = $row[emoticon];

new:

$search = preg_quote($row['emoticon']); 

[CHeeSeBLiND]

thanks alot

ive finally got it to work properly

i was just gonna ask you about the preg_quote thingy aswell hehe