结果UNION MySql在PHP中有所不同

Question

MYSQL

SELECT A.judul FROM tb_pengetahuan A UNION SELECT B.judul FROM tb_forum B

结果MYSQL View Image

PHP

$sql=mysql_query("SELECT judul FROM tb_pengetahuan UNION SELECT judul FROM tb_forum");
$no=1;
while ($data=mysql_fetch_array($sql)){
   $judul = $data['judul'];
}

RESULT View Image

为什么结果不同？

我想要与MySql相同的结果，你能帮助我吗？