Online PHP editor | output for nYmG8

@ 2014-01-22T20:26:56Z

<?php

$a = new StdClass();
$b = new StdClass();
$array1 = array($a, $a, $b);
$array2 = array($a, $b, $b);


function countHashes ($array) {
    $count = array();
    foreach ($array as $val) {
        $hash = spl_object_hash($val);
        if (! isset($count[$hash])) {
            $count[$hash] = 0;
        }
    }

    $count[$hash]++;

    return $count;
};

$count1 = countHashes($array1);
$count2 = countHashes($array2);

if (count($count1) === count($count2)) {
    foreach ($count1 as $key => $value) {
        if ($count2[$key] !== $value) {
            echo 'not the same!';
        }
    }
}

Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6: Fatal error: Call to undefined function spl_object_hash() in /in/nYmG8 on line 12
Process exited with code 255.
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: spl_object_hash() in /in/nYmG8 on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: spl_object_hash() in /in/nYmG8 on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: spl_object_hash() in /in/nYmG8 on line 12

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