Is there an in-built function in PHP that allows me to select array keys that are not one(s) I have specified -

consider array

$my_array("key1"=>"value1", "key2"=>"value2", "key3"=>"value3") 

does php have function in can pass in key1 , returns key2 , key3. assuming key1 same key2 , key3 can change time time.

$my_array("key1"=>"value1", "key2"=>"value2", "key3"=>"value3"); $result = the_function_i_want("key1"); print_r($result); 

expected output

 array     (         [key2] => value2         [key3] => value3     ) 

if wish compare keys use following;

$array1 = array("a" => "green", "red", "blue", "red"); $array2 = array("a" => "green");  function key_diff($array1, $array2){      foreach ($array2 $skey => $value) {         if(isset( $array1[$skey] ) ) unset($array1[$skey]);     }     return $array1; }  var_dump(key_diff($array1, $array2)); exit; 

if wish compare values can use array_diff() taken php manual

<?php $array1 = array("a" => "green", "red", "blue", "red"); $array2 = array("b" => "green", "yellow", "red"); $result = array_diff($array1, $array2);  print_r($result); ?> 

multiple occurrences in $array1 treated same way. output :

array (     [1] => blue )