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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>PHP Diff of Three Arrays Using Keys For Comparison</title> </head> <body> <pre> <?php // Sample arrays $array1 = array("a"=>"apple", "b"=>"ball", "c"=>"cat", "dog"); $array2 = array("a"=>"apricot", "b"=>"banana"); $array3 = array("a"=>"alligator", "d"=>"dog"); // Computing the difference $result = array_diff_key($array1, $array2, $array3); print_r($result); ?> </pre> </body> </html>
