The array_udiff() function use a built-in function to compare the keys and values of two or more arrays, and returns the differences.
Note: This function uses a built-in function to compare the keys, and a user-defined function to compare the values!
Returns an array containing the entries from array1 that are not present in any of the other arrays
| Parameter & Description |
|---|
| array1(Required)
It specifies an array. |
| array2(Required)
It specifies an array to be compared with the first array. |
| array3(Optional)
It specifies an array to be compared with the first array. |
| data_compare_func*(Required)
The name of the user-made function. |
Syntax
array_udiff_assoc(array1,array2,array3...,myfunction) Example
function myfunctiondemo($a,$b)
{
if ($a===$b)
{
return 0;
}
return ($a>$b)?1:-1;
}
$array1=array("a"=>"Cooper","b"=>"Samuel","c"=>"Lachlan");
$array2=array("a"=>"Lachlan","b"=>"James","c"=>"Lachlan");
$result=array_udiff_assoc($array1,$array2,"myfunctiondemo");
print_r($result);
Output
Array ( [a] => Cooper [b] => Samuel ) 
