Online PHP editor | rfc for 66cai

@ 2021-11-05T11:28:08Z

<?php

// Fiddle in response to StackOverflow question: https://stackoverflow.com/questions/69845122
// by HappyDog

// According to the PHP documentation, returning false from an output-buffer
// callback should result in the same result as returning the original input,
// but this fiddle shows that returning false actually breaks the buffer if it
// is 'cleaned'.  The solution is to always return a string value.

//////////////////////////////
// CALLBACKS

// Returns false, which means 'use the buffer as supplied'.
function ReturnFalse($Buffer, $Phase) {
    global $arrCallbacks;
    $arrCallbacks[] = array($Buffer, $Phase);
    return false;
}

// Returns the supplied buffer - result should be identical to returning false.
function ReturnBuffer($Buffer, $Phase) {
    global $arrCallbacks;
    $arrCallbacks[] = array($Buffer, $Phase);
    return $Buffer;
}

//////////////////////////////
// TESTING CODE

foreach (array("ReturnFalse", "ReturnBuffer") as $Callback) {
    $arrCallbacks = array();
    print("== Testing " . $Callback . " ===\n");

    ob_start($Callback);
    print("First\n");
    ob_clean();
    print("Second\n");
    ob_end_flush();

    print("\n");
    var_dump($arrCallbacks);
}

Output for git.master, git.master_jit, rfc.property-hooks: == Testing ReturnFalse === Second array(1) { [0]=> array(2) { [0]=> string(6) "First " [1]=> int(3) } } == Testing ReturnBuffer === Second array(2) { [0]=> array(2) { [0]=> string(6) "First " [1]=> int(3) } [1]=> array(2) { [0]=> string(7) "Second " [1]=> int(8) } }

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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