Can You Pass a Function as a Parameter in PHP?

In PHP, passing a function as a parameter is feasible if you are running PHP version 5.3.0 or later. This functionality is facilitated by using anonymous functions, as detailed in the PHP manual.

To pass a function as a parameter, define the receiving function with the parameter type set to accept an anonymous function. For instance, the following code snippet declares the exampleMethod function, which takes an anonymous function as its argument:

function exampleMethod($anonFunc) {
    //execute anonymous function
    $anonFunc();
}

This function can be invoked with an anonymous function passed as its argument, enabling you to execute the anonymous function's code within the exampleMethod. The following example demonstrates how this works:

exampleMethod(function() {
    // code to be executed within exampleMethod
});