Advanced PHP

• Avoid Using frequent array accesses, remember, each array access is a hash lookup.

The Wrong Way

<?php
$ar['name'] = 'Sterling';

for ($i = 0; $i < 20; ++$i) {
    print $ar['name'];
}
?>

• Shorten "required" executions, such as loops.

• Avoid rebuilding large data structures.

• Look for alternatives to regular expressions