Things that affect our applications' performance

[eluser]Seppo[/eluser]
Just a quick notice about that page (I have never seen it before)

Code:

foreach ($items as $name => $value)
{
    if (strpos($str, $name) !== FALSE)
    {
        str_replace($name, $value, $str);
    }
}

does not look optimal, as the guidelines say. If the string is not found, I'm still getting worst results...

And also,

Code:

$str = str_replace(array_keys($items), array_values($items), $str);

is at least two times faster...