How to alias a function in PHP?

Question

Is it possible to alias a function with a different name in PHP? Suppose we have a function with the name sleep. Is there a way to make an alias called wa

Answer 1

If you aren't concerned with using PHP's "eval" instruction (which a lot of folks have a real problem with, but I do not), then you can use something like this:

function func_alias($target, $original) {
    eval("function $target() { \$args = func_get_args(); return call_user_func_array('$original', \$args); }");
}

I used it in some simple tests, and it seemed to work fairly well. Here is an example:

function hello($recipient) {
    echo "Hello, $recipient\n";
}

function helloMars() {
    hello('Mars');
}

func_alias('greeting', 'hello');
func_alias('greetingMars', 'helloMars');

greeting('World');
greetingMars();