Question

I have a tag like this

[tag id="4554" align="center"]

How can i get the tag as a key in an array and then all the arguments are dynamic and inserted in the array as key => value like

Array (
    [tag] => Array
        (
            [id] => 4554
            [align] => "center"
        )

)

Answer 1

I generally favor algorithms to regular expressions:

$str = '[tag id="4554" align="center"]';

$arr = explode(" ",trim($str,'[]'));

$mainkey = array_shift($arr);

$temp = array();
foreach($arr as $part)
{
    $parts = explode("=",$part);
    $temp[$parts[0]] = trim($parts[1], '"');
}

$arr2[$mainkey] = $temp;

print_r($arr2);

outputs:

Array
(
    [tag] => Array
        (
            [id] => 4554
            [align] => center
        )

)