Question

I retrieve with PHP a css file in my database.

So i have : $mycss = "SOME CSS SOME CSS SOME CSS"

In this $mycss, i can have :

div.coul01,.red,.coul01{
    color:#663333;
}
div.coul02,.blue,.coul02{
    color:#3366CC;
}

For this example, i need to retrive in PHP, for each instruction that begins with div. the second element, here “red” and “blue”.

Do you have any ideas ? Thanks !

Answer 1

If you really don’t want to use any library and want to stick to regular expressions, this will work for you:

<?php
$mycss = "body,div.coul01,.white,.coul01{
    color:#000000;
}
div.coul01,.red,.coul01{
    color:#663333;
}
div.coul02,.blue,.coul02{
    color:#3366CC;
}
div.coul02,.grey,.coul02{
    color:#C0C0C0;
}";
preg_match_all("/^div\.[^,{]*,[\.#](\w+)/ms", $mycss, $matches, PREG_PATTERN_ORDER, 0);
?>

and then in your $matches variable you will have something like this:

$matches[0][0]  div.coul01,.red
$matches[0][1]  div.coul02,.blue
$matches[0][2]  div.coul02,.grey
$matches[1][0]  red
$matches[1][1]  blue
$matches[1][2]  grey

$matches[1] is what you are looking for

Example