PHP Hook Function

Question

Can I basically do something like:

register_function_hook('myFunctionHook');

so then when any function is run:

functionA(); //The hook runs myFunctionHook();
anoterFunction(); //The hook runs myFunctionHook();
Class::functionA(); //The hook runs myFunctionHook();

Does such a thing exist?

-- Edit --

What I want to do is to get a breakdown of durations of each function. Ie. Performance Tuning. I want to get an idea of what takes all the time without installing xDebug on my Apache server, however I don't know if it is possible.

Answer 1

It's possible with register_tick_function() , also check this comment on the PHP manual :

$script_stats = array();
$time = microtime(true);

function track_stats(){
    global $script_stats,$time;
    $trace = debug_backtrace();
    $exe_time = (microtime(true) - $time) * 1000;
    $func_args = implode(", ",$trace[1]["args"]);
    $script_stats[] = array(
        "current_time" => microtime(true),
        "memory" => memory_get_usage(true),
        "file" => $trace[1]["file"].': '.$trace[1]["line"],
        "function" => $trace[1]["function"].'('.$func_args.')',
        "called_by" => $trace[2]["function"].' in '.$trace[2]["file"].': '.$trace[2]["line"],
        "ns" => $exe_time
        );
    $time = microtime(true);
    }

declare(ticks = 1);
register_tick_function("track_stats");

// the rest of your project code

// output $script_stats into a html table or something

This "hooks" to everything, not just functions but I think it fits your purpose.

Answer 2

No, its not possible the way you like

But You can achieve something close with inheritance.

 class Vehicle {
       function __construct() {
              $this->hookFunction();
       }

       function hookFunction() {
              //
       }
 }

 class Car extends Vehicle {

 } 

 Class Toyota extends Car {

 }

 new Toyota(); // will you hook function
 // this exclude static call to member functions, or other inline functions.

Answer 3

What you looking for is called profiler. And PQP looks like one, which is standalone.

Answer 4

而不是污染代码，您应该使用真正的探查器，例如xdebug提供的探查器。

Answer 5

Not sure if the Topic Starter needs this anymore, but perhaps others can still benefit from this.

There is a PHP lib, written completely in PHP, that allows you to do exactly what you want.

Here's an article about how it works, including the source code: http://phpmyweb.net/2012/04/26/write-an-awesome-plugin-system-in-php/

It allows you to register a function from a class to be hooked. So it basically executes your code first, and then you determine wether you want to call the original function too after your code has been executed.