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<?php function countHashes ($array) { $count = array(); foreach ($array as $val) { $hash = spl_object_hash($val); if (! isset($count[$hash])) { $count[$hash] = 0; } $count[$hash]++; } return $count; }; function checkWhetherSame($array1, $array2) { $count1 = countHashes($array1); $count2 = countHashes($array2); if (count($count1) === count($count2)) { foreach ($count1 as $key => $value) { if ($count2[$key] !== $value) { return false; } } } return true; }; $a = new StdClass(); $b = new StdClass(); $array1 = array($a, $a, $b); $array2 = array($a, $b, $b); $array2 = array($a, $b, $b, $b); var_dump(checkWhetherSame($array1, $array2)); var_dump(checkWhetherSame($array1, $array1)); var_dump(checkWhetherSame($array2, $array3));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(false) bool(true) Warning: Undefined variable $array3 in /in/5ZAWp on line 42 Warning: foreach() argument must be of type array|object, null given in /in/5ZAWp on line 6 bool(true)
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
bool(false) bool(true) Notice: Undefined variable: array3 in /in/5ZAWp on line 42 Warning: Invalid argument supplied for foreach() in /in/5ZAWp on line 6 bool(true)
Output for 7.3.32 - 7.3.33, 7.4.26
bool(false) bool(true) Warning: Invalid argument supplied for foreach() in /in/5ZAWp on line 6 bool(true)
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/5ZAWp on line 7
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: spl_object_hash() in /in/5ZAWp on line 7
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/5ZAWp on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: spl_object_hash() in /in/5ZAWp on line 7

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