Online PHP editor | rfc for Bartu

@ 2014-10-13T08:42:51Z

<?php

$a = (object) array();
$b = (object) array();

function object_handle($obj)
{
    static $mask = 0, $offset;

    if (!$mask) {
        if (defined('HHVM_VERSION')) {
            $offset = 24;
        } else {
            $offset = 8;
        }
        $o = (object) array();
        $mask = hexdec(substr(spl_object_hash($o), $offset, 8));

        // check if we are nested in an output buffering handler to prevent a fatal error with ob_start() below 
        foreach (debug_backtrace(PHP_VERSION_ID >= 50400 ? DEBUG_BACKTRACE_IGNORE_ARGS : false) as $frame) {
            if (isset($frame['function'][0]) && !isset($frame['class']) && 'o' === $frame['function'][0]
                && in_array($frame['function'], array('ob_clean', 'ob_end_clean', 'ob_flush', 'ob_end_flush', 'ob_get_contents', 'ob_get_flush'))
            ) {
                $frame['line'] = 0;
                break;
            }
        }
        if (!empty($frame['line'])) {
            ob_start();
            debug_zval_dump($o);
            $mask ^= substr(ob_get_clean(), 17);
        }
    }

    return hexdec(substr(spl_object_hash($obj), $offset, 8)) ^ $mask;
}

//ob_start('abc');
//ob_end_flush();

$o = array();
echo object_handle($o[]=(object) array()), "\n";
echo object_handle($o[]=(object) array()), "\n";
echo object_handle($o[]=(object) array()), "\n";
echo object_handle($o[]=(object) array()), "\n";
echo object_handle($o[]=(object) array()), "\n";
echo object_handle($o[]=(object) array()), "\n";
echo object_handle($o[]=(object) array()), "\n";
echo object_handle($b), "\n";
echo object_handle($a), "\n";

function abc()
{
    global $a;
    isset($a) or $a = (object) array();

    return object_handle($a);
}

ob_start('abc');

Output for git.master, git.master_jit, rfc.property-hooks: Warning: A non-numeric value encountered in /in/Bartu on line 31 3 Warning: A non-numeric value encountered in /in/Bartu on line 31 4 Warning: A non-numeric value encountered in /in/Bartu on line 31 5 Warning: A non-numeric value encountered in /in/Bartu on line 31 6 Warning: A non-numeric value encountered in /in/Bartu on line 31 7 Warning: A non-numeric value encountered in /in/Bartu on line 31 8 Warning: A non-numeric value encountered in /in/Bartu on line 31 9 Warning: A non-numeric value encountered in /in/Bartu on line 31 2 Warning: A non-numeric value encountered in /in/Bartu on line 31 1 7

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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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