- ob_start: documentation ( source)
- microtime: documentation ( source)
- ob_end_clean: documentation ( source)
<?php
ob_start();
$time = microtime(1);
$i = 0;
while($i++ < 10000) echo'abcdef','abcdef','abcdef','abcdef','abcdef','abcdef','abcdef','abcdef';
ob_end_clean();
echo (microtime(1)-$time)." seconds for commas";
echo "\n";
ob_start();
$time = microtime(1);
$i = 0;
while($i++ < 10000) echo'abcdef'.'abcdef'.'abcdef'.'abcdef'.'abcdef'.'abcdef'.'abcdef'.'abcdef';
ob_end_clean();
echo (microtime(1)-$time)." seconds for dot";