Online PHP editor | output for 9ICTq

@ 2018-10-23T07:40:51Z

<?php
function cross_product($array, $value) {
    $output = array();
    foreach ($array as $arr) {
        foreach ($value as $val) {
            $output[] = array_merge($arr, array($val));
        }
    }
    return $output;
}

$input = "A1 / B2 - C3 + D4 / E5 / E6 C3 + A5";
$parts = preg_split('/(?<=[A-Za-z0-9])\s+(?=[A-IK-Za-ik-z])|\s+([+-])\s+/', $input, -1, PREG_SPLIT_DELIM_CAPTURE);

foreach ($parts as &$part) {
    $part = preg_split('#\s+/\s+#', $part);
}

$init = array_map(function ($v) { return array($v); }, array_shift($parts));

$outputs = array_reduce($parts, 'cross_product', $init);

foreach ($outputs as $output) {
    echo implode(' ', $output) . "\n";
}

Output for 5.6.38, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.3.4, 8.3.6: A1 - C3 + D4 C3 + A5 A1 - C3 + E5 C3 + A5 A1 - C3 + E6 C3 + A5 B2 - C3 + D4 C3 + A5 B2 - C3 + E5 C3 + A5 B2 - C3 + E6 C3 + A5
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 A1 - C3 + D4 C3 + A5 A1 - C3 + E5 C3 + A5 A1 - C3 + E6 C3 + A5 B2 - C3 + D4 C3 + A5 B2 - C3 + E5 C3 + A5 B2 - C3 + E6 C3 + A5

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