<?php
declare(strict_types=1);
 
function tekaTekiTeko(int $batas): void {
    if ($batas < 20) {
        throw new InvalidArgumentException("Parameter harus minimal 20");
    }
 
    for ($i = 1; $i <= $batas; ++$i) {
        $out = '';
        if ($i % 2 === 0) $out .= "Teka";
        if ($i % 3 === 0) $out .= "Teki";
        if ($i % 5 === 0) $out .= "Teko";
        echo $out !== '' ? $out : $i;
        echo PHP_EOL;
    }
}
 
 
try {
    tekaTekiTeko(30);
} catch (Throwable $e) {
    echo "Error: " . $e->getMessage();
}
 

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