Check If A Value Exists In Multidimensional Array

Here is a function which will help you to know if a value exists in Multidimensional Array.

1. function in_mdarray($needle,$array)
2. {
3.     if (array_key_exists($needle,$array) or in_array($needle,$array))
4.     {
5.          return true;
6.     }
7.     else
8.     {
9.           $return = false;
10.           foreach (array_values($array) as $value)
11.           {
12.               if (is_array($value) and !$return)
13.               {
14.                   $return = in_mdarray($needle,$value);
15.               }
16.           }
17.           return $return;
18.     }
19. }

Check If A Value Exists In Associative Array

The "in_array" function of php checks if a value exists in an array. But it don't work properly with associative array. Here is a function which will work properly with associative array.

1. function in_assoc($needle,$array)
2. {
3.     $key = array_keys($array);
4.     $value = array_values($array);
5.     if (in_array($needle,$key)){return true;}
6.     elseif (in_array($needle,$value)){return true;}
7.     else {return false;}
8. }