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preg_match in PHP?

+2 votes

Is this correct syntax?

case preg_match("/^[-1|delete|hide|save]/", $MassOption) !== 1 :

I am needing to test against -1 (negative 1) and the words delete, hide, and save. $MassOption should not equal those.

posted Sep 22, 2015 by anonymous

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1 Answer

+1 vote

No, in regular expressions, the [ ] are for matching individual characters, not strings. You could instead perform a standard match in () and just negate the result of preg_match() with a !.

answer Sep 22, 2015 by Honey
I did finally come across the () however the ! eluded me. Wherein do I place the ! mark? Like so?

preg_match("/^![-1|delete|hide|save]/", $MassOption) !== false

or just?

preg_match("/^![-1|delete|hide|save]/", $MassOption)
You wouldn't place it in your Regex, you use it to negate your call to preg_match:


And get rid of the square brackets, they are for character matches, not string matches.
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