Online PHP editor | output for Kr2J4

@ 2018-03-06T10:29:11Z

<?php
$array = [
    "one" => 1,
    "two" => 2,
    "three" => 3,
    "four" => 4
];

while (($key = key($array)) !== null) {  // check if the internal pointer points beyond the end of the elements list or the array is empty
    echo "$key => {$array[$key]}\n";     // display current key value pair
    if ($array[$key] < 3) {              // an arbitrary condition
        echo "\t";
        ++$array[$key];                // increment the current value
    } else {                           // current value is satisfactory
        echo "\t(advance pointer)\n";
        next($array);                  // move pointer
    }
}

Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: one => 1 one => 2 one => 3 (advance pointer) two => 2 two => 3 (advance pointer) three => 3 (advance pointer) four => 4 (advance pointer)
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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