loop-simple.php

<?php 







$cnt = 10000;
$st = microtime(true);
foreach( range(0, $cnt) as $idx ){


  $list = range(0,1000);
  $list = array_map( function($e){ return strtotime("+$e day"); }, $list );
  $list = array_map( function($e){ return date("Y-m-d", $e); }, $list );
  $list = array_filter( $list, function( $e ){return preg_match('/-03-/', $e);} );

}

$time = microtime(true) - $st; 
echo "multiple-loop : $time \n";