Re: preg_match() is returning inaccurate result

On Tue, Apr 23, 2024 at 8:02 AM <[email protected]> wrote:

> PHP8.3.4
>
> Can someone help? preg_match() is acting weird about \$ and \^.
>
> var_dump(preg_match("/\$third-party$/",'xyz$third-party')?true:false);//
> returns FALSE, really expecting TRUE here!
> var_dump(preg_match("/$third-party$/",'xyz$third-party')?true:false);//
> returns TRUE???
>
> ^ and $ must escape if it is not in beginning/ending position.
> Isn't this correct?
>
> At least Javascript is answering correctly.
>
> /\$third-party$/.test('xyz$third-party'); // TRUE
> /$third-party$/.test('xyz$third-party'); // FALSE
>
Hi,

double quotes ("") around a string are evaluating `$third` as a variable in
the first argument.

Use single quotes ('') instead.
var_dump(preg_match('/\$third-party$/','xyz$third-party')?true:false);
var_dump(preg_match('/$third-party$/','xyz$third-party')?true:false);

Playground: https://onlinephp.io/c/52068