How to get value of an associative HTML array in PHP using a string?

Question

Look I have a form like this:

I want t

Answer 1

You can use preg_match_all() to get all the indexes in the string into an array:

$indexes = preg_match_all('/(?<=\[\')(?:[^\']*)(?=\'\])/', $str);
$indexes = $indexes[0]; // Get just the whole matches

Then use a loop to drill into $_POST.

$cur = $_POST;
foreach ($indexes as $index) {
    $cur = $cur[$index];
}

At this point $cur will contain the value you want.