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run code in 300+ PHP versions simultaneously

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@ 2017-09-09T19:25:18Z

<?php

$count = 1;
$col = 'A';

while ($count < 300) {
    echo $count . ' = ' . $col . PHP_EOL;
    
    if (isset($col[1])) {
        echo (ord(strtolower($col[0])) - 96) * 26 + ord(strtolower($col[1])) . PHP_EOL;
    } else {
        echo ord(strtolower($col[0])) - 96 . PHP_EOL;
    }
    $col++;
    $count++;
}

Output
Performance
VLD
References
Branches

strtolower: documentation ( source)
ord: documentation ( source)

preferences:dark modelive preview

50.8 ms | 402 KiB | 5 Q