PHP 7.2 Function create_function() is deprecated

Question

I have used create_function in my application below.

$callbacks[$delimiter] = create_function(\'$matches\', \"return \'$delimiter\' . strtolower(\\$matches[1         


        

Answer 1

You should be able to use an Anonymous Function (aka Closure) with a call to the parent scoped $delimiter variable, like so:

$callbacks[$delimiter] = function($matches) use ($delimiter) {
    return $delimiter . strtolower($matches[1]);
};