<?php $array1 = array( 'post', 'page' ); $array2 = array( 'page', 'post' ); $equal = $array1 == $array2; $strict = $array1 === $array2; // Note: this will error in PHP 5.4 and lower (unsupported by WP) $equivalent = empty( array_diff( $array1, $array2) ); var_dump( 'equal', $equal ); var_dump( 'strict', $strict ); var_dump( 'equivalent', $equivalent );