How to remove values in one array from another array using PHP

Example: I have array A with values and another array B. I need to remove the values in array A from the values in array B.

1. Use the PHP function array_diff

   • Description

     • array array_diff ( array $array1 , array $array2 [, array $ … ] )
     • Compares array1  against array2  and returns the difference.

   • Parameters

     • array1 = The array to compare from
     • array2 = An array to compare against

2. Code example below:

   <?php
   
       $arrayA = array('one','two');
   
       $arrayB = array('one','two','three','four','five');
   
       
   
       $newArray = array_diff($arrayB,$arrayA);
   
       
   
       echo '<pre>';
   
       print_r($newArray);
   
       echo '</pre>';
   
   ?>
   

3. The code example above will print the following:

   Array
   
   (
   
       [2] => three
   
       [3] => four
   
       [4] => five
   
   )
   

4. Explanation:

   • Array A values will be removed from array B
   • The $newArray variable will contain the values of array B with values from array A removed