[SOLVED] Checking a string for alphanumeric and double quotations?

[adamcannon]

Hello,

 

I'm trying to check if the $string has anything other than alphanumerics or double quotations.  Here is my code:

 

if (preg_match('^[a-zA-Z0-9"]', $string)) {
     echo "Only alphanumerics and double quotations are allowed.";
}

 

Does the syntax look remotely correct?  I'm getting this error as well:

 

Warning: preg_match() [function.preg-match]: No ending delimiter '^' found in /home/mysite/test.php on line 7

 

Thanks, adam.

[effigy]

As the error hints, you need delimiters. You also need to modify your pattern to negate the character class.

 

/[^a-zA-Z0-9"]/