Re: Regex in PHP
| From: | Nathan Nobbe | Date: | Wed, 04 Jun 2008 16:56:12 +0000 |
| Subject: | Re: Regex in PHP | ||
| References: | 1 2 3 4 5 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-275021@lists.php.net to get a copy of this message | ||
On Wed, Jun 4, 2008 at 10:26 AM, Robert Cummings <robert@interjinn.com>
wrote:
> Nope, case insensitive is slower since you must make two tests for
> characters having a lower and upper case version. With case sensitive
> comparisons you only need to make a single comparison.
a quick test shows stripos beating strpos.
<?php
$str = 'asSAFAASFDADSfasfjhalskfjhlaseAERQWERQWER;.dafasjhflasfjd';
$search = 'fdasASDFAafdas';
$start = microtime();
strpos($str, $search);
$end = microtime();
$r1 = $end - $start;
$start = microtime();
stripos($str, $search);
$end2 = microtime();
$r2 = $end2 - $start;
echo "strpos: $r1\n";
echo "stripos: $r2\n";
if($r2 < $r1) {
echo 'stripos is faster' . PHP_EOL;
}
?>
-nathan