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

This Array of Anonymous functions worked for me, see code below:

// This will be a dynamic name that could 
// be used as a function like "namespace".
$dynamic_name = 'my_dynamic_name';

// Here's some variables that you could use in the scope of
// your dynamic anonymous functions. 
$outerVariable = 'If I need this varible, I can use it';
$outerVariableTwo = 'If I need this varible, I can use it too!';

// Create an array that we can later use and turn into 
// and associative array with our new dynamic anonymous functions.
$dynamicAnonFunctions = [];

// Create the first dynamic function.
$dynamicAnonFunctions[($dynamic_name."_func_one")] = function () use ($outerVariable, $dynamic_name) { 
    echo 'Running: function '.$dynamic_name .'_func_one()';
    echo '

';
    echo $outerVariable;
    echo '

';
    echo 'This works :)'; 
    echo '

';
};

// Create the second dynamic function 
$dynamicAnonFunctions[($dynamic_name."_func_two")] = function () use ($outerVariableTwo, $dynamic_name) { 
    echo '- - - - - - - - - - - - - - - - - - - ';
    echo '

';
    echo 'Running: function '.$dynamic_name .'_func_two()';
    echo '

';
    echo $outerVariableTwo;
    echo '

';
    echo 'This also works :)!'; 
    echo '

';
};

// Call the functions.
$dynamicAnonFunctions[($dynamic_name."_func_one")]();
$dynamicAnonFunctions[($dynamic_name."_func_two")]();

// Halt execution.
exit();

Just copy this into your script file and you will see the output from the echo statements, then simply remap the function to your own will!

Happy coding =)