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run code in 300+ PHP versions simultaneously

@ 2017-12-11T17:44:42Z

<?php

function print_while_each($list) {
    while (list($key, $val) = each($list)) {
        echo $key, $val;
        if ($val == '2') {
            $list[] = 4;
        }
    }
}

function print_foreach($list) {
    foreach ($list as $key => $val) {
        echo $key, $val;
        if ($val == '2') {
            $list[] = 4;
        }
    }
}

function print_while_next($list) {
    $val = reset($list);
    while (!empty($val)) {
        $key = key($list);
        $val = current($list);
        
        echo $key, $val;
        if ($val == '2') {
            $list[] = 4;
        }
        $val = next($list);
    }
}

$list = array('1', '2', '3');

print_while_each($list);
echo '<br>', PHP_EOL;

print_foreach($list);
echo '<br>', PHP_EOL;

print_while_next($list);
echo '<br>', PHP_EOL;

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13: Fatal error: Uncaught Error: Call to undefined function each() in /in/g77Ae:4 Stack trace: #0 /in/g77Ae(37): print_while_each(Array) #1 {main} thrown in /in/g77Ae on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33: Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/g77Ae on line 4 01122334<br> 011223<br> 01122334<br>
Output for 7.1.0 - 7.1.33, 7.3.32 - 7.3.33: 01122334<br> 011223<br> 01122334<br>

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