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@ 2015-11-18T10:44:07Z

<?php

$obj1 = new stdClass();
$obj1->attr = 'Rod';

$obj2 = new stdClass();
$obj2->attr = 'Jane';

$obj3 = new stdClass();
$obj3->attr = 'Freddy';

$array1 = array(
    $obj1,
    $obj2,
    $obj3
);

$array2 = array(
    $obj1,
    $obj3,
    $obj2
);

function return1($a,$b) {
    if ($a->attr == $b->attr) {
        return 0;
    } else {
        return 1;
    }
}

function returnNeg1($a,$b) {
    if ($a->attr == $b->attr) {
        return 0;
    } else {
        return -1;
    }
}

//$diff1 = array_diff($array1, $array2);
$diff2 = array_udiff($array1, $array2, 'returnNeg1');
$diff3 = array_udiff($array1, $array2, 'return1');

//$int = array_intersect($array1, $array2);
$int2 = array_uintersect($array1, $array2, 'returnNeg1');
$int3 = array_uintersect($array1, $array2, 'return1');

//var_dump($diff1);
var_dump($diff2);
var_dump($diff3);

//var_dump($int1);
var_dump($int2);
var_dump($int3);

Output for git.master, git.master_jit, rfc.property-hooks: array(1) { [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } } array(2) { [0]=> object(stdClass)#1 (1) { ["attr"]=> string(3) "Rod" } [2]=> object(stdClass)#3 (1) { ["attr"]=> string(6) "Freddy" } } array(2) { [0]=> object(stdClass)#1 (1) { ["attr"]=> string(3) "Rod" } [2]=> object(stdClass)#3 (1) { ["attr"]=> string(6) "Freddy" } } array(1) { [1]=> object(stdClass)#2 (1) { ["attr"]=> string(4) "Jane" } }

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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