How can i check if a string is URL encoded

[newb]

How can i check if a string is URL encoded or not using PHP

[teynon]

I haven't done a whole lot of googling here, but you could use this statement from PHP.net for urlencode:

 

Returns a string in which all non-alphanumeric characters except -_. have been replaced with a percent (%) sign followed by two hex digits and spaces encoded as plus (+) signs.

 

This would possibly correlate to a preg match like this:

 

if (preg_match("@^[a-zA-Z0-9%+-_]*$@", $variable)) { // variable is urlencoded. }

 

[newb]

Thanks.