The /e modifier is deprecated, use preg_replace_callback instead - wordpress plugin

Question

So i found this wordpress plugin, and it's the only one that offers what i need, but it's outdated :/ This is the error:

Deprecated: preg_replace() [function.preg-replace]: The /e modifier is deprecated, use preg_replace_callback instead

And this is the code that causes the error:

$brform = preg_replace('/<p>(<input\stype="hidden"(?:.*?))<\/p>/isme', "'<div style=\'display:none;\'>'.\"\n\".str_replace('<br>', '', str_replace('<br />', '', stripslashes_deep('\\1'))).\"\n\".'</div>'", $form);

I know the answer is in here, but i can't get it to work on this line of code, that's why i'm asking in here. How to do it when all this html and CSS is in there?

Try to replace that function as shown here : http://stackoverflow.com/questions/19245205/replace-deprecated-preg-replace-e-with-preg-replace-callback — Milap, Jan 09 '16 at 10:04
I tried to do that, but with no luck. I'm not sure where to break it up when all this html and css is in there — patrick furbo, Jan 09 '16 at 10:16

score 1 · Answer 1 · edited May 23 '17 at 12:31

You can use an anonymous function to pass the matches to your function:

$result = preg_replace_callback(
    "/\{([<>])([a-zA-Z0-9_]*)(\?{0,1})([a-zA-Z0-9_]*)\}(.*)\{\\1\/\\2\}/isU",
    function($m) { return CallFunction($m[1], $m[2], $m[3], $m[4], $m[5]); },
    $result
);

Apart from being faster, this will also properly handle double quotes in your string. Your current code using /e would convert a double quote " into \".

Source : Replace deprecated preg_replace /e with preg_replace_callback

The /e modifier is deprecated, use preg_replace_callback instead - wordpress plugin

1 Answers1