Online PHP editor | output for vDSTT

<?php $schema = Array( Array("prestation_1" => 123, "prestataire_1" => 321, "prestation_2" => 456, "prestataire_2" => 654), Array("prestation_1" => 123, "prestataire_1" => 321, "prestation_2" => 456, "prestataire_2" => 654), Array("prestation_1" => 123, "prestataire_1" => 321, "prestation_2" => 456, "prestataire_2" => 654), Array("prestation_1" => 123, "prestataire_1" => 321, "prestation_2" => 456, "prestataire_2" => 654) ); function check( $array) { $array=array_values($array); $k=0; for($i=0;$i<count($array);$i++) { if(count($array)-1 > $i) { if($array[$i] == $array[$i]) $k=0; else $k=1; } } if($k == 0) return $array[0]; else return array(); } print_r(check($schema)) ;