PHP的PDO以下这个程序为什么会出错？
<br>
<?php<br>
try {<br>
$dbh = new PDO('mysql:dbname=mytest;host=localhost', 'root', '19aeacv44899d4ff');<br>
<br>
$query = 'INSERT INTO contactInfo(name, address, phone) VALUES(?, ?, ?)';<br>
$stmt = $dbh->prepare($query);<br>
<br>
$name = '张某某';<br>
$address = '海珠区';<br>
$phone = '15814535527';<br>
$stmt->bindParam(1, $name);<br>
$stmt->bindParam(2, $address);<br>
$stmt->bindParam(3, $phone);<br>
<br>
$stmt->execute();<br>
if ($insertID = $dbh->lastInsertId()) {<br>
echo $insertID.'<br />';<br>
} else {<br>
echo '插入出错！';<br>
exit();<br>
}<br>
} catch(PDOException $d) {<br>
echo '数据库连接失败：'.$e->getMessage();<br>
exit();<br>
}<br>
<br>
mysql:
结果是：插入出错！
不知道为什么会插入不成功？？而且在数据库里真的插入不成功
