Online PHP editor | output for 2CgmF

@ 2017-12-21T15:48:03Z

<?php

$map = [
    6 => 215601,
    11 => 3260461,
    7 => 210282,
    11 => 3258941
    ];

foreach($map as $key => $value) {
    $p = str_pad($key, 3, '0', STR_PAD_LEFT) . str_pad($value, 10, '0', STR_PAD_LEFT);
    
    echo "\n";
    echo $p;
    
    $ctr = 22;
    $ctro = '0' . substr($p,1,2) . substr($p,6);
    
    echo "\n";
    echo $ctro;
    
    for ($i=0; $i <= 8; $i+=2) {
        $ctr = $ctr + 3*(int)substr($ctro,$i,1) + (int)substr($ctro,(1+$i),1); 
    }
    
    echo "\n";
    echo $ctr;
    
    $ctr = (10 - ($ctr % 10)) % 10;
    
    echo "\n";
    echo "Key = " . $ctr;
}

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: 0060000215601 0060215601 69 Key = 1 0110003258941 0113258941 86 Key = 4 0070000210282 0070210282 78 Key = 2
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 0060000215601 0060215601 69 Key = 1 0110003258941 0113258941 86 Key = 4 0070000210282 0070210282 78 Key = 2

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