php mysqli和pdo两种方式操作msyql的基本操作

1、mysqli查询

$con = new mysqli('localhost', 'root', '', 'collectmail');

$con->set_charset('utf8');

$sql = "SELECT * FROM mail_data WHERE mail=?";

$stmt = $con->prepare($sql);

$stmt->bind_param('s', $mail);

$mail = 'sdfa@qq.com';

$stmt->execute();

$result = $stmt->get_result();

$arr = $result->fetch_all(MYSQLI_ASSOC);//$result->fetch_array(MYSQLI_ASSOC) 单行

$stmt->close();

2、mysqli插入（更新删除类似）

$con = new mysqli('localhost', 'root', '', 'collectmail');

$con->set_charset('utf8');

$sql = "INSERT INTO mail_data (mail, create_time) VALUES (?, ?)";

$stmt = $con->prepare($sql);

$stmt->bind_param('s', $mail, $time);

$time = time();

$mail = 'sdfa@qq.com';

$stmt->execute();

$insert_id = $stmt->insert_id;

echo $stmt->error;

$stmt->close();

3、pdo查询

$dsn = 'mysql:dbname=collectmail;host=localhost';

$user = 'root';

$pass = '';

$pdo = new PDO($dsn, $user, $pass);

$sql = "SELECT * FROM mail_data WHERE mail=?";

$sth = $pdo->prepare($sql);

// $sth->bind_param(1, $mail);

// $sth->execute();

$sth->execute([$mail]);

$result = $sth->fetchAll(PDO::FETCH_ASSOC);

var_dump($result);

4、pdo插入（更新删除类似）

$dsn = 'mysql:dbname=collectmail;host=localhost';

$user = 'root';

$pass = '';

$pdo = new PDO($dsn, $user, $pass);

$sql = "INSERT INTO mail_data (mail, create_time) VALUES (?, ?)";

$sth = $pdo->prepare($sql);

$mail = 'dfsf@qq.com';

$time = time();

// $sth->bind_param(1, $mail);

// $sth->bind_param(2, $time);

// $sth->execute();

$sth->execute([$mail, $time]);

$insert_id = $pdo->lastInsertId()