preg_replace program

[aenirtower]

I am having a problem with preg_replace() ...

function Rainbow($text) {
...script...
}
$rainbowtext = "[rainbow]text here[/rainbow]";
$rainbowtext = preg_replace("\[rainbow\](.*?)[\/rainbow\]",Rainbow("\\\\1"),$rainbowtext);

$rainbowtext only returns \1 ... what am I doing wrong?

[HalfaBee]

You have two problems.

1. syntax for regex is wrong. You need a start and end char eg. "#rainbow[/rainbow]#"

2. you need the rainbow function to act on the returned text from preg_replace.

HalfaBee

[aenirtower]

Ok, the first one you gave me I understood, but not the second one. I tried the first one but that just gave me an error.

[HalfaBee]

This is the correct regex

$rainbowtext = "[rainbow]text here[/rainbow]";
$rainbowtext = preg_replace("#\\[rainbow\\](.*?)\\[/rainbow\\]#","\\\\1",$rainbowtext);

You need to test the result to see if it matched if not rainbow() it.

function rainbow( $S )
{
    return "rainbow=$S";

}
$rainbowtext = "[rainbow]text here[/rainbow]";
if( $rainbowtext != ($r=preg_replace("#\\[rainbow\\](.*?)\\[/rainbow\\]#","\\\\1",$rainbowtext)) )
{
   $rainbowtext = rainbow( $r );
}
echo $rainbowtext;

HalfaBee