<?php
 
function tekaTekiTeko($batas)
{
    // Validasi tipe dan nilai parameter
    if (!is_int($batas) || $batas <= 20) {
        throw new InvalidArgumentException("Parameter harus berupa unsigned integer dengan nilai minimal 20.");
    }
 
    // Iterasi dari 1 sampai $batas
    for ($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) . PHP_EOL;
    }
}
 
// Contoh pemanggilan fungsi:
try {
    tekaTekiTeko(30);
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}
 

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