php array index by value code example
Example 1: array_search in php
<?php
$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');
$key = array_search('green', $array); // $key = 2;
$key = array_search('red', $array); // $key = 1;
?>
Example 2: how to lookup value inside object php
$array = [
'clothes' => 't-shirt',
'size' => 'medium',
'color' => 'blue',
];
extract($array);
echo("$clothes $size $color"); // t-shirt medium blue