Checking two arrays against each other

[loganbest]

I have two arrays of keywords that I'm pulling from the database. I'm wanting to compare those two arrays and see if ANY of the contents are the same, if they are push that result into another array for later use.

while($row_rsCWGetupsell = $cartweaver->db->db_fetch_assoc($rsCWGetupsell))
     {
          $b = array_unique(array_filter(explode(",", preg_replace( '/\s*/m', '', $row_rsCWGetupsell["product_keywords"])), "strlen"));
          $a = array_unique(array_filter(explode(",", preg_replace( '/\s*/m', '', $row_rsCWGetProduct["product_keywords"])), "strlen"));
          if($a IN $b) // <--- this is where the comparison should be!
          $list[] = $row_rsCWGetupsell;
     }

 

[Pikachu2000]

I believe this is what you're after.

 

$new_array = array_intersect($array1, $array2);