- ob_start: documentation ( source)
- microtime: documentation ( source)
<?php
$v1 = 5;
$v2 = '5-4';
$time = microtime(1);
$i = 0;
@ob_start();
while($i++ < 1000000) echo 'a','b','c','d','e';
@ob_endclean();
echo (microtime(1)-$time)." seconds for commas";
echo "\n";
$time = microtime(1);
$i = 0;
@ob_start();
while($i++ < 1000000) echo 'a'.'b'.'c'.'d'.'e';
@ob_endclean();
echo (microtime(1)-$time)." seconds for dot";
function donull($v){};