php类或正则表达式检查正则表达式模式本身（至少检查分隔符/语法..）

Question

I wrote a valitor class with a fair amount of regex in there.
Using Eclipse Regex Util, it is able to report regex pattern "mistakes", so I'm wondering whether I could find a regex - or a php subclass - , to check that the regex pattern I'm calling is a correct regex pattern, nesting a dedicated in-class method, on top of checking/testing them unitary.

Answer 1

The easiest way would be to just try using preg_match() with the regex on an empty string; if it returns False, an error has occurred, meaning that the pattern is invalid.