//truncate table user; //不但將數據全部刪除，而且重新定位自增的字段
<?php
try {
$pdo = new PDO('mysql:host=localhost;dbname=test', 'root', '');
//exec():執行一條sql語句并返回其受影響的記錄的條數
//EXEC對于select沒有作用
$sql = 'INSERT user(username,password,email) VALUES("KING","' . md5('king') . '","imooc@qq.com");';
$res = $pdo->exec($sql);
echo $res;//1
} catch (PDOException $e) {
echo $e->getMessage();
}
?>
$pdo->lastInsertId()
<?php
header("content-type:text/html;charset=utf-8");
try {
$pdo = new PDO('mysql:host=localhost;dbname=test', 'root', '');
$sql = <<<EOF
INSERT user(username,password,email)VALUES("king71","king1","imoooc1@qq.com"),
("king82","king2","imoooc2@qq.com"),
("king93","king3","imoooc3@qq.com");
EOF;
$res = $pdo->exec($sql);
echo "受影響的記錄的條數:" . $res . "<br/>";
//lstInsertId 得到新插入記錄的ID號
echo "最后插入的ID號為" . $pdo->lastInsertId();
} catch (PDOException $e) {
echo $e->getMessage();
}
?>
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