Help getting the differences between 2 arrays

[TheBrandon]

Hello all,

 

I have 2 arrays containing numbers; I just need to extract the unique ones from the first array. For example, right now I have this:

existing_Array:

Array ( [31] => 31 [34] => 34 [41] => 41 [43] => 43 [44] => 44 [62] => 62 [63] => 63 [64] => 64 [71] => 71 [97] => 97 [233] => 233 [234] => 234 [291] => 291 )

submitted_Array:

Array ( [31] => 3 [34] => 2 [41] => 3 [43] => 1 [44] => 2 [63] => 1 [64] => 2 [71] => 6 [97] => 5 [233] => 3 [234] => 1 [291] => 2 )

 

I want this:

new_Array:

Array ( [62] => 62 )

 

I thought array_diff did this exactly, but when I do:

$new_Array = array_diff($existing_Array, $submitted_Array);

 

It's giving me this:

Array ( [31] => 31 [34] => 34 [41] => 41 [43] => 43 [44] => 44 [62] => 62 [63] => 63 [64] => 64 [71] => 71 [97] => 97 [233] => 233 [234] => 234 [291] => 291 )

 

Can someone help me get this to work?

[TheBrandon]

I got it. I put it inside of a loop using array_key_exists. If anyone has a better method, I'd love to know!

 

foreach($existing_Array as $key => $value){

if(!array_key_exists($key, $submitted_Array)){
	$new_Array[] = $key;
}

}

[Barand]

try

 

$diff = array_diff_key ($existing_array, $submitted_array);