PHP Pattern Matching

[Actorial]

Hi There,

I have question about pattern matching. What I'm trying to do is replace any characters in a string that are not alphanumerics or spaces and these characters:

,.?!"-[]/'

I have this line going, it only replaces alphanumerics and spaces though:

$string = ereg_replace("[^[:space:]a-zA-Z0-9]", "", $string);

but that as far as I get without screwing it up. Any help?

 

[Actorial]

also would like to allow @,

so the list of characters I want to allow is

,.?!"-[]/'@

thanks!

 

[jpadie]

this might work faster (not tested, though)

<?
$html = "some long string # ";
$len = strlen($html);
$replacement = "W"; //single character
for ($i=0; $i<$len; $i++){
	if ((( ord($html{$i})<62) 	&& 	(ord($html{$i}) !== 32) ) ||   ( ord($html{$i}) > 122)){
		$html{$i} = $replacement;
	 }
}
echo $html;
?>