Question

I don’t understand what is wrong, how can I have this error for this simple regex.
I can type whatever I want, it will always give me the same error. And in the message itself it doesn’t show which modifier causes the problem, the modifier is just empty.

public function getRows($content) {
    $regex = '/[a-z]+/';
    preg_match($content, $regex, $rows);
    print_r($rows); exit;
    return $return;
}

Answer 1

The first parameter is the regex, the second is the subject:

int preg_match ( string $pattern , string $subject …

^{from preg_match() in the Manual}

So this should work fine:

preg_match($regex, $content, $rows);