control file to PHP array

In Linux, .DEB files have ‘control’ text files that are arranged as follows:

Name: Value
Size: Value
Information: Mutliline
             value

What is the best way to get the control file into a PHP array resembling:

Array ( "Name" => Value, "Size" => Value, "Information" => Value);

keeping in mind that the values can be multi-line and include the “:” separator.

Thanks!

Answer

$source = fopen('path/to/file');
$index = '';
while( ($line = fgets($source)) !== false ){
    if(preg_match('/^s*$/', $line))
        continue 1; // ignore empty lines //

    if(!preg_match('/^s+/', $line)){ // if the line does not start with whitespace then it has a new key-value pair //
        $items = explode(':', $line, 2); // separate at the first : //
        $index = strtolower($items[0]); // the keys are case insensitive //
        $value = preg_replace('/^s+/', '', $items[1]); // remove extra whitespace from the begining //
        $value = preg_replace('/s+$/', '', $value); // and from the end //
    }
    else{ // continue the value from the previous line //
        $value = preg_replace('/s+$/', '', $line); // remove whitespace only from the end //
    }
    $data[$index] .= $value;
}
fclose($source);

Implemented as described here: http://www.debian.org/doc/debian-policy/ch-controlfields.html

If I made mistakes corrections are welcomed!