php array_intersect() function usage example

array_intersect() Function is used to compare two (or more) arrays key value and return the intersection. This function compares the key values ​​​​of two (or more) arrays and returns the intersection array, which includes all the arrays being compared (array1), as well as any other parameter arrays (array2 or array3 etc.).

array array_intersect ( array array1, array array2 [, array ...])

Let me show you the example from the manual:

<?php 
$array1 = array ("a" => "green", "red", "blue"); 
$array2 = array ("b" => "green", "yellow", "red"); 
$result = array_intersect ($array1, $array2); 
print_r($result); 
?>

The output result is as follows:

Array 
( 
[a] => green 
[0] => red 
)

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