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@ 2014-10-16T17:49:36Z

<?php

$a = array();
$arrayKey = '[0][1]';

$a[0][1] = "two levels deep";

function get( $string, $vars )
{
    $keys = explode( '][', substr( $string, 1, -1 ) );
    foreach( $keys as $key ) {
        $vars = $vars[$key];
    }
    return $vars;
}

echo get($arrayKey, $vars );

Output
Performance
VLD
References
Branches

substr: documentation ( source)
explode: documentation ( source)

preferences:dark modelive preview

58.6 ms | 402 KiB | 5 Q