Online PHP editor | refs for 2tBUH

<?php $array=[ 257 => [ "recaudacion" => "2017-10-07", "Contribuyentes Locales,Activid. Especiales y Salas de Recreacion" => "2017-10-16", "Contribuyentes Convenio Multilateral" => "2017-10-13", "Regimen simplificado" => "2017-10-00", "Declaracion Jurada Fiscal 2016 Contibuyentes Locales" => "2017-10-00" ], 258=> [ "Impuestos de Sellos"=>"2017-10-10", "Declaracion Jurada anual 2016 Contribuyentes de convenio multilateral"=>"2017-10-00", "Recategorizacion cuatrimestral regimen simplificado"=>"2017-10-00" ] ]; function stringifySubarrays($array){ foreach($array as &$a){ // modify $a by reference foreach($a as $k=>&$v){ // modify $v by reference $v="$k Vence: $v"; // write new value using key and value } $a=implode("\n\n",$a); // glue new subarray of string together using 2 newline characters } return $array; // return the new array } var_export(stringifySubarrays($array));