Posted by jamen on 12/10/05 01:38

hendry wrote:
> I am looking for a function that checks there isn't non-valid URL
> characters in some input:
>
> http://www.blooberry.com/indexdot/html/topics/urlencoding.htm
>
> if (preg_match("/[^a-zA-Z0-9$-_.+!*'(),]/", $uri))

Remember that in a character class the hypen (-) character has a very
special meaning. So escape it, or move it to the front or back of the class:

$-_

Means all the characters between $ and _ including $ and _

And escape the $-character to be sure php doesn't try to parse it as a
variable

/[^a-zA-Z0-9\$_.+!*'(),-]/

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