<?php
function tekaTekiTeko(int $batas): void {
    if ($batas < 20 || $batas < 0) {
        throw new InvalidArgumentException("Parameter harus unsigned integer dan minimal 20");
    }
 
    for ($i = 1; $i <= $batas; $i++) {
        $output = '';
 
        if ($i % 2 == 0) $output .= 'Teka';
        if ($i % 3 == 0) $output .= 'Teki';
        if ($i % 5 == 0) $output .= 'Teko';
 
        echo $output !== '' ? $output : $i;
        echo PHP_EOL;
    }
}
 
// Contoh pemanggilan:
tekaTekiTeko(30);
?>
 

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