PHP preg_match(): Delimiter must not be alphanumeric or backslash

Question

For some reason I keep getting this error in my PHP for preg_match(): Delimiter must not be alphanumeric or backslash even though I have a delimiter in my preg_match regexp, so what is going on? This is happening for each and ever preg_match function i call in my code. I don't know what is wrong with it.

 $return = preg_match($string, "/^[a-zA-Z ]+$/")

Answer 1

You have it the wrong way around. The pattern comes before. Try this:

$return = preg_match("/^[a-zA-Z ]+$/", $string);

Also, the docs can be read here.