Online PHP editor | perf for sTGts

@ 2012-11-09T21:52:38Z

<?php
function array_unflatten($array)
{
  $final = array();
  foreach($array as $keychain => $value)
  {
    $segment = array();
    $tmp = &$segment;
    $keys = preg_split('!(!<\\)/!', $keychain);
    foreach($keys as $key)
    {
      $tmp = &$tmp[$key] = array();
    }
    $tmp = $value;
    $final = array_merge($final, $segment);
  }
  return $final;
}

function array_flatten($array, $keychain = '/', $data = '')
{
    if (!is_array($data)) $data = array();
    foreach($array as $key=> $value)
    {
        if(is_array($value))
        {
                $data = array_merge($data, array_flatten($value, $keychain.$key.'/'));
        }
        else
        {
            $data[$keychain.$key] = $value;
        }
    }
    return $data;
}

$array = array( array( 'foo' => 'bar', 'baz' => 'blah' ),
                array( 'foo' => 'bar', 'baz' => 'blah' ) );

$flat = array_flatten($array);
var_dump($flat, array_unflatten($flat));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.4.8	0.012	0.041	12.02
5.4.7	0.012	0.043	12.02
5.4.6	0.011	0.046	12.02
5.4.5	0.008	0.049	12.02
5.4.4	0.012	0.044	12.00
5.4.3	0.009	0.045	12.00
5.4.2	0.010	0.045	12.00
5.4.1	0.012	0.043	12.00
5.4.0	0.013	0.050	11.50
5.3.18	0.014	0.045	12.67
5.3.17	0.013	0.042	12.67
5.3.16	0.015	0.047	12.67
5.3.15	0.011	0.041	12.67
5.3.14	0.016	0.053	12.66
5.3.13	0.010	0.047	12.66
5.3.12	0.011	0.046	12.66
5.3.11	0.010	0.045	12.66
5.3.10	0.010	0.043	12.12
5.3.9	0.010	0.041	12.10
5.3.8	0.015	0.056	12.09
5.3.7	0.010	0.043	12.09
5.3.6	0.011	0.042	12.08
5.3.5	0.009	0.043	12.02
5.3.4	0.009	0.044	12.02
5.3.3	0.012	0.044	11.98
5.3.2	0.009	0.045	11.77
5.3.1	0.009	0.044	11.73
5.3.0	0.009	0.046	11.71

preferences:dark modelive preview