Removes values of one array from another

Question

Say I have these two array:

$arraryA = array(10587,10590,10598,10592,10602,10604,10607);

$arrayB = array(10590);

What I know, is that,

values of $arrayB will always be elements from $arrayA
$arrayB may have one or more elements

I need to remove the values of $arrayB from $arrayA.

Means, I need a new array as:

$arrayC = array(10587,10598,10592,10602,10604,10607);

if $arrayB = array(10590, 10604), $arrayC will be:

$arrayC = array(10587,10598,10592,10602,10607);

Any idea ?

That's it Mark. How can I accept your reply ? Can you post a new reply please so that I can accept it ? — Jeremy
– Jeremy, Commented Mar 4, 2013 at 19:47
Question, do I need to check if $arrayB is present as an array with array_diff, or that checks it automatically ? — Jeremy
– Jeremy, Commented Mar 4, 2013 at 19:48
I can't recall if the second argument passed to array_diff() must be an array, but suspect that this is probably the case — Mark Baker
– Mark Baker, Commented Mar 4, 2013 at 19:52
Right, I checked it. $arrayB must be present as an array, else it throws error. — Jeremy
– Jeremy, Commented Mar 4, 2013 at 19:53

John Conde · Accepted Answer · 2013-03-04 19:46:48Z

3

Use array_diff()

$arrayC= array_diff($arrayA, $arrayB);

Example:

$arrayA = array(10587,10590,10598,10592,10602,10604,10607);
$arrayB  = array(10590);
$arrayC  = array_diff($arrayA, $arrayB);

var_dump($arrayC);

// array(6) { [0]=> int(10587) [2]=> int(10598) [3]=> int(10592) [4]=> int(10602) [5]=> int(10604) [6]=> int(10607) }

See it in action

answered Mar 4, 2013 at 19:46

John Conde

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