3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data_array = array('root1' => array(1,2,3), 'root2' => array(3,4,5)); $out = ''; foreach ($data_array as $key => $value) { $out.= $key.'=>['; $count = count($value); foreach ($value as $val) { $out.=$val.','; } $out = rtrim($out, "<br />,"); $out.= '],<br />'; } $out = rtrim($out,','); echo $out;

preferences:
42.12 ms | 402 KiB | 5 Q