I need to modify the function so that it doesn't use create_function. I want to use an anonymous feature but I don't know how to use it.
function arrayUniqueMerge()
{
$variables = '$_' . implode(',$_', array_keys(func_get_args()));
$func = create_function('$tab', ' list(' . $variables . ') = $tab; return array_unique(array_merge(' . $variables . '));');
return $func(func_get_args());
}
I tried to understand the purpose of your function, but my conclusion was that it is dependant on the PHP version you have build it for.
However, I have come to realize that most likely in PHP 7 your function can be refactored to just the following:
function arrayUniqueMerge2(...$args) {
return array_unique(array_merge(...$args));
}
Testing it with the sample data:
print_r(arrayUniqueMerge2(['a', 'b'], ['b', 'c'], ['c', 'd']));
//Array ( [0] => a [1] => b [3] => c [5] => d )
You can created anonymous function as such:
<?php
$myfunc = function ($x) {
return $x . ' world';
};
echo $myfunc('Hello'); //Echoes "Hello world"
Read more about anonymous functions in the documentation: https://www.php.net/manual/en/functions.anonymous.php
Also create_function was depreaced in PHP 7.2.0
