3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array ( 0 => array ( 'name' => 'test', 'address_1' => 'test', 'address_2' => '', 'address_3' => '', 'address_4' => '', 'postcode' => 'test', 'country' => '1', 'tel' => '123566', ), 1 => array ( 'name' => 'test1wefrwerferf', 'address_1' => 'test', 'address_2' => '', 'address_3' => '', 'address_4' => '', 'postcode' => 'test', 'country' => '1', 'tel' => '123566', ), 2 => array ( 'name' => 'test', 'address_1' => 'test', 'address_2' => '', 'address_3' => '', 'address_4' => '', 'postcode' => 'test', 'country' => '1', 'tel' => '123566', ), 3 => array ( 'name' => 'test', 'address_1' => 'test', 'address_2' => '', 'address_3' => '', 'address_4' => '', 'postcode' => 'test', 'country' => '1', 'tel' => '123566', ), ); // $acount = array_count_values($a); $diff = ($a[0] === $a[1]); echo $diff; print_r($diff); print_r(array_keys($a));

preferences:
47.12 ms | 402 KiB | 5 Q