Question

How can I search an array to know if there is a key=>value in array?

for example in the following array I want to know if [uid] => 10 exists or not.

Array ( 
    [0] => Array (
      [name] => a
      [uid] => 1 
    ) 
    [1] => Array (
      [name] => b
      [uid] => 2 
    ) 
  ) 

Answer 1

in_array and array_search work just fine with nested arrays:

$a = array(

    array('id' => 10),
    array('id' => 11),
    array('id' => 12),
    array('id' => 13),
    array('id' => 14),

);

var_dump(in_array(array('id' => 14), $a)); // true
var_dump(in_array(array('id' => 99), $a)); // false

var_dump(array_search(array('id' => 14), $a)); // 4
var_dump(array_search(array('id' => 99), $a)); // false