<?phpif (isset($_POST['ok'])) {$a = isset($_POST['a']) ? abs($_POST['a']) : false;$b = isset($_POST['b']) ? abs($_POST['b']) : false; echo 'Natija:' . $a + $b;}?> <form method="post"><input type="text" name="a"><br><input type="text" name="b"><br><input type="submit" name="ok" value="Qo'shish"></form>
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