I have an array of keys for a multidimensional array, and I want to get the value of it (if possible, first checking if it even exists). For example, I have the following array:

$keys = array( 'markets', 0, 'orders', 0, 'parameters', 'planType' );

And from this, I need to programmatically get the value of this:

$request['markets'][0]['orders'][0]['parameters']['planType']

I feel like I'm overcomplicating this...The only method I could think of was with the use of eval, but this seems very potentially insecure:

eval("\$value = \$request['" . implode("']['", $keys) . "'];")
echo $value;

    try

    <?php
/**
 * Walks through an arrays offsets, allows extendable params/indexes like sprintf
 *
 * @param string $array : The array to go through
 * @param string $index : An index of the array to search through.
 * @return variant      : value if found, boolean false if not.
 */
function GetArrayIndex( $array , $index , $index ='' )
{
    $args = func_get_args();
    $value = $array;

unset( $args[0] );
foreach( $args AS $arg )
{
    if( !isset( $value[ $arg ] )  )
    {
        return false;
    }

    $value = $value[ $arg ];
}

return $value;
}


$test_array[0][1][3] = "monkey";


print_r( GetArrayIndex($test_array , 0 ) );
print_r( GetArrayIndex($test_array , 0 , 1 ) );
print_r( GetArrayIndex($test_array , 0 , 1 , 3) );


?>

      thanks! i knew i was over complicating this, should have waited for the daily caffeine to kick in...i condensed it down a bit for my own purposes:

      // assumes $params is an array (which is a safe assumption in my case)
function array_descend($struct, $params) {

foreach ($params as $key) {
	$struct = isset($struct[$key]) ? $struct[$key] : NULL;
}

return $struct;
}
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