Online PHP editor | output for gYHM2

@ 2020-08-02T09:42:26Z

<?php

$spinArray = [
        [1,2,3],
        [2,3,4],
        [1,2,3]
    ];

function checkIfArraysEqual($arrayOfArrays) {
    $resultIndexes = [];
    $tempArray = [];
    foreach($arrayOfArrays as $key => $array) {
        $tmpKey = array_search($array, $tempArray);
        if($tmpKey !== false) {
            $resultIndexes[] = $key;
            $resultIndexes[] = $tmpKey;
        } else {
            $tempArray[$key] = $array;
        }
    }
    
    return array_unique($resultIndexes);
}


var_dump(checkIfArraysEqual($spinArray));

Output for 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 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7: array(2) { [0]=> int(2) [1]=> int(0) }
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(2) { [0]=> int(2) [1]=> int(0) }

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