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run code in 300+ PHP versions simultaneously

@ 2018-06-03T17:30:17Z

<?php
function braceCheck($values) {
    for ($i = 0; $i <= count($values) - 1; $i++) {
        $braces = str_split($values[$i]);
        $values[$i] = isValid($braces);
    }
    return $values;
}


function isValid($braces) {
    $available = ['{' => '}', '(' => ')', '[' => ']'];
    $opened = [];
    $closed = [];
 
    for ($i = 0; $i <= count($braces) - 1; $i++) {
        if (in_array($braces[$i], array_keys($available))) {
            $opened[] = $braces[$i];
            continue;
        }
        $closed[] = $braces[$i];
    }
    
    return match($available, $opened, $closed);
}


function match($available, $opened, $closed) {
    $last_open = $opened[count($opened) - 1];
    $opened = array_values($opened);
    $closed = array_values($closed);
    
    
    if (count($opened) !== count($closed)) {
        echo 'count off';
        return 'NO';
    }
    
    // Check for invalid nesting or non-consecutive braces
    if(!testValidity($available, $last_open, $opened, $closed)) {
        return 'NO';
    }
    
    if (count($opened) >= 1) {
        $result = match(
            $available, 
            array_slice($opened, 0, -1), 
            array_slice($closed, 1)
        );
    }
    
    return 'YES';
}


function testValidity($available, $last_open, $opened, $closed) {
    if ($available[$last_open] !== $closed[0]) {
        if ($available[$opened[0]] === $closed[0]) {
            return true;
        }
        return false;
    }
    return true;
}


$values = ['{[()]}', '{[(]}', '{}()[]', '{]}['];
var_dump(braceCheck($values));
?>

Output for 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: Parse error: syntax error, unexpected token "," in /in/NNUHJ on line 24
Process exited with code 255.
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 Parse error: syntax error, unexpected token "," in /in/NNUHJ on line 24
Process exited with code 255.
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33: Notice: Undefined offset: -1 in /in/NNUHJ on line 29 Notice: Undefined index: in /in/NNUHJ on line 57 Notice: Undefined offset: 0 in /in/NNUHJ on line 57 count off Notice: Undefined offset: -1 in /in/NNUHJ on line 29 Notice: Undefined index: in /in/NNUHJ on line 57 Notice: Undefined offset: 0 in /in/NNUHJ on line 57 array(4) { [0]=> string(3) "YES" [1]=> string(2) "NO" [2]=> string(3) "YES" [3]=> string(3) "YES" }
Output for 7.3.32 - 7.3.33: count offarray(4) { [0]=> string(3) "YES" [1]=> string(2) "NO" [2]=> string(3) "YES" [3]=> string(3) "YES" }

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