Interesting piece of php trivia

foreach: 4.04250204563
while: 7.35851705074

Original - php Code <?php function getmicrotime(){ list($usec, $sec) = explode(" ",microtime()); return ((float)$usec + (float)$sec); } $data = array_fill(1,1000000,'foo'); $time_start = getmicrotime(); reset($data); foreach($data as $key=>$val); $time_end = getmicrotime(); $time = $time_end - $time_start; echo "foreach: $time<br />n"; $time_start = getmicrotime(); reset($data); while(list($key,$val) = each($data)); $time_end = getmicrotime(); $time = $time_end - $time_start; echo "while: $time<br />n"; ?>

<?php
 
function getmicrotime(){ 
   list($usec, $sec) = explode(" ",microtime()); 
   return ((float)$usec + (float)$sec); 
} 
 
$data = array_fill(1,1000000,'foo');
 
 
$time_start = getmicrotime();
reset($data);
foreach($data as $key=>$val);
$time_end = getmicrotime();
$time = $time_end - $time_start;
echo "foreach: $time<br />n";
 
$time_start = getmicrotime();
reset($data);
while(list($key,$val) = each($data));
$time_end = getmicrotime();
$time = $time_end - $time_start;
echo "while: $time<br />n";
 
?>