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@ 2016-05-23T08:38:03Z

<?php

class ExitHandler
{
    private static $exitCode = 0;
    
    private static $exitHandlers = [];
    
    private static $shutdownRegistered = false;
    
    public static function onExit(callable $callback, ...$args)
    {
        self::$exitHandlers[] = [$callback, $args];
        
        if (!self::$shutdownRegistered) {
            register_shutdown_function(function() {
                foreach (self::$exitHandlers as list($handler, $args)) {
                    $handler(self::$exitCode, ...$args);
                }
            });
            
            self::$shutdownRegistered = true;
        }
    }
    
    public static function exit(int $code)
    {
        self::$exitCode = $code;
        exit($code);
    }
}

ExitHandler::onExit(function($code) {
    var_dump($code);
});

ExitHandler::exit(123);

Output for git.master, git.master_jit, rfc.property-hooks: int(123)
Process exited with code 123.

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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