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  • mysqli和mysql和pdo查询

    mysql

    mysql_connect($db_host, $db_user, $db_password); 
    mysql_select_db($dn_name); 
    $result = mysql_query("SELECT `name` FROM `users` WHERE `location` = '$location'"); 
    while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) 
    { 
    echo $row['name']; 
    } 
    mysql_free_result($result);

    mysqli

    $mysqli = new mysqli($db_host, $db_user, $db_password, $db_name); 
    $sql = "INSERT INTO `users` (id, name, gender, location) VALUES (?, ?, ?, ?)"; 
    $stmt = $mysqli->prepare($sql); 
    $stmt->bind_param('dsss', $source_id, $source_name, $source_gender, $source_location);//四个参数 所以是dsss整形字符串 
    $stmt->execute(); 
    $stmt->bind_result($id, $name, $gender, $location); 
    while ($stmt->fetch()) 
    { 
    echo $id . $name . $gender . $location; 
    } 
    $stmt->close(); 
    $mysqli->close();

    pdo

    $dsn = "mysql:host=$db_host;dbname=$db_name"; 
    $dbh = new PDO($dsn, $db_user, $db_password); 
    $sql = "SELECT `name`, `location` FROM `users` WHERE `location` = ? , `name` = ?"; 
    $sth = $dbh->prepare($sql); 
    $sth->execute(array($location, $name)); 
    $result = $sth->fetch(PDO::FETCH_OBJ); 
    echo $result->name . $result->location; 
    $dbh = NULL;
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  • 原文地址:https://www.cnblogs.com/jdhu/p/4310343.html
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