Generator Puzzle Word 8-way PHP

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8-way generator

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8-way Generator in PHP, HTML allows:

Upload a maximum of 20 words a user should guess, or have them put in the system automatically (if the database is full enough)

The database also stores all new words the administrator enters into the generator, full support for diacritics.

The output is an eight-symbol that can be printed and solved, or cut out in a PC program and solved by some graphics program (Sketch, Photoshop, Zoner, etc.).

The system keeps the generated secret database, can be retrieved.

The administrator has a login that logs into the site. It works under both PHP 5.6 and PHP 7.

8-way maximum - 20x20 letters

  

Source code for base - concept - variable-length 1-line logic - search word: ARDUINO

   Output: CKTBPJIYHGXUQGKLSYFFIBTZNXVVAMADELRMPSQDONWWCJRHOARDUINOCJVBRKMUMJYXHENKRWPUWEXODTFLDZBAGLNQPFISOHYSVTQG

   <?php		
$slovo = "ARDUINO";
$dlzka1 = rand(1, 50);
$dlzka2 = rand(1, 50);
function generateRandomString($length) {
  return substr(str_shuffle(str_repeat($x='ABCDEFGHIJKLMNOPQRSTUVWXYZ', ceil($length/strlen($x)) )),1,$length);
}
echo generateRandomString($dlzka1);
echo $slovo;
echo generateRandomString($dlzka2);
?>
  

Possible HTML + addition of 8 directions can look like this: