Search for two values in array - php

Question

I have an array $categories and I would like to check if either 'computers' or 'laptops' are in the array.
I can do
$terms = wp_get_post_terms($post_id, 'product_cat');
foreach ($terms as $term) {
$categories[] = $term->slug;
}
if (in_array( 'computers', $categories)) {
//run a lot of code
}
if (in_array('laptops', $categories)) {
//run a lot of code
}
but is there a way to combine with an OR so I don't have to write out the code twice?
something like
if ((in_array( 'computers', $categories)) OR (in_array('computers-he', $categories))) {
//run a lot of code
}
I tried it but it doesn't work I get.
PHP Warning: in_array() expects parameter 2 to be array, null

Answer 1

1. Define
$categories = array();
before-
$terms = wp_get_post_terms( $post_id, 'product_cat' );
2. Use || like this:-
if(in_array('computers',$categories) || in_array('laptops',$categories)) {
//run a lot of code
}
Now full code will be:-
$categories= array();
$terms = wp_get_post_terms( $post_id, 'product_cat' );
foreach($terms as $term) {
$categories[] = $term->slug;
}
if(in_array('computers',$categories) || in_array('laptops',$categories)) {
//run a lot of code
}

Answer 2

a different approach:
$terms = wp_get_post_terms($post_id, 'product_cat');
foreach ($terms as $term)
{
if(in_array($term->slug, ['computers', 'laptops']))
{
//run a lot of code
break; //run the code once
}
}

Answer 3

I usually do this:
if (array_intersect($categories, ['computers', 'laptops'])) {
//run a lot of code
}
If one or both terms are in $categories, it returns the array with those terms, if none are in it, it returns an empty array which is falsy.

Answer 4

From you question, I guess you need to run code if there is at least one term of particular category. In such case you can use array_reduce and take advantage of short-circuit evaluation:
$criteria = [
'computers' => true,
'laptops' => true
];
$test = function ($carry, $term) use ($criteria) {
return $carry || isset($criteria[$term->slug]);
};
if (array_reduce($terms, $test, false)) {
echo 'Run a lot of code.';
}
Here is working demo.