How to apply in_array for mutidimensional array

Question

$categories => Array([0] => Jewelry & Accessories,[1] => Pet Care)
$categories_master => Array([0] => Jewelry & Accessories,[1] => Apparel,[2] => Beauty & Fragrance)

I have two arrays like above,

I have to check like this in_array($categories,$categories_master), I know it wont work but I need to return 1 or true for anyone match with $categories_master array

Can you better describe the output you want to receive? array_intersect() may be very close to what you need. — Michael Berkowski
– Michael Berkowski, Commented Dec 10, 2014 at 19:54
So if any one item matches, return true? Use array_intersect() and verify that the count() >= 1 — Michael Berkowski
– Michael Berkowski, Commented Dec 10, 2014 at 19:57
To avoid confusion, can you please specify what the output should be for your example above? Should it be true or array(true, false) — ymas
– ymas, Commented Dec 10, 2014 at 19:59

AbraCadaver · Accepted Answer · 2014-12-10 21:03:34Z

2

Do the array_intersect ( returns an array containing all the values of $categories that are present in $categories_master ), and cast to boolean. If return array has items it will return true, or false otherwise.

(bool) array_intersect( $categories, $categories_master );

Also this will evaluate to true if the returned array is not empty, false for empty array:

if(array_intersect( $categories, $categories_master )) {
    //there are one or more matches
}

edited Dec 10, 2014 at 21:03

AbraCadaver

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answered Dec 10, 2014 at 20:12

Danijel

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