[PHP] Parsing the media string

[PHP] Parsing the media string - Printable Version

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[PHP] Parsing the media string by Matti on 08-23-2006 at 10:05 AM

Ok, this simply sucks.

I want to parse a string like:

code:
$psm = "\\0Music\\01\\0Nu op Q: {0} - {1}\\0When It All Falls Apart\\0Veronicas\\0\\0\\0";

to an array containing its elements, like:

code:
$match = array(4) {
[0]=> string(5)
"Music"
[1]=> string(18)
"Nu op Q: {0} - {1}"
[2]=> string(23)
"When It All Falls Apart"
[3]=> string(9)
"Veronicas"
}

using preg_match(). But now I have problems with the backslash... uh?!
This code fails:

code:
preg_match("/^\\0([a-zA-Z]+)\\01\\0(.*?)\\0(.*?)\\0(.*?)\\0(.*?)\\0(.*?)\\0(.*?)$/", $psm, $ico_match);

And while I tried to look for the fault, I found that this:

code:
preg_match("/0([a-zA-Z]+)/", $psm, $ico_match);

finds "Music", while this one:

code:
preg_match("/\\0([a-zA-Z]+)/", $psm, $ico_match);

fails.

Any ideas?

RE: [PHP] Parsing the media string by RaceProUK on 08-23-2006 at 10:59 AM

preg_match("/^\\\\0([a-zA-Z]+)\\\\01\\\\0(.*?)\\\\0(.*?)\\\\0(.*?)\\\\0(.*?)\\\\0(.*?)\\\\0(.*?)$/", $psm, $ico_match);

Note the quadruple backslashes.

Explanation: In JScript, the backslash is used to escpace certain special characters that are otherwise unprintable. To print a backslash therefore, you need to escape that too i.e. \\. So, for a double backslash, both need escaping, so \\\\.

RE: [PHP] Parsing the media string by Matti on 08-24-2006 at 07:45 AM

OMFG That's weird, but it worked!
* Matti notes: catching a backslash in PHP -> 4 backslashes

Thanks RP!