ArraySearch

<?php
function multidimensional_array_search($search_value,$array) {
    $mached = array();
    if(is_array($array) && count($array) > 0) {
        foreach($array as $key => $value) {
            if(is_array($value) && count($value) > 0) {
                multidimensional_array_search($search_value,$value);
            } else {
                return array_search($search_value,$array); exit;
            }
        }
    }
}
 
// useage
echo multidimensional_array_search('test3',array('test','test1','test2','test3'));
 
function recursiveArraySearch($haystack, $needle, $index = null)
{
    $aIt = new RecursiveArrayIterator($haystack);
    $it = new RecursiveIteratorIterator($aIt);
    
    while($it-&gt;valid())
    {
        if (((isset($index) AND ($it-&gt;key() == $index)) OR (!isset($index))) AND ($it-&gt;current() == $needle)) {
            return $aIt-&gt;key();
        }
        
        $it-&gt;next();
    }
    
    return false;
}
?>
Removing specific value Using array_diff()

function remove_element($array,$value) {
  return array_diff($array, (is_array($value) ? $value : array($value)));
}
 
$myArray = array('php', 'laravel', '.net', 'java', 'c#', 'javascript');
 
$result = remove_element($myArray,'.net');
 
print_r($result);
 array_map 
 
  function my_array_map($function, $arrary)
{
  $result = array();
  foreach ($arr as $key => $val)
  {
      $result[$key] = (is_array($val) ? my_array_map($function, $val) : $function($val));
  }
  return $result;
}