PDOphp
<?php //實例 (MySQLi - 面向對象)建立數據庫鏈接 echo "實例 (MySQLi - 面向對象)<br/>"; $servername = "127.0.0.1"; $username = "root"; $password = "123456"; date_default_timezone_set("Asia/Shanghai"); echo date('Y-m-d H:i:s',strtotime('now')); // 建立鏈接 $conn = new mysqli($servername, $username, $password); // 檢測鏈接 if ($conn->connect_error) { die("鏈接失敗: " . $conn->connect_error); } /* *注意在以上面向對象的實例中 $connect_error 是在 PHP 5.2.9 和 5.3.0 中添加的。 * 若是你須要兼容更早版本 請使用如下代碼替換: // 檢測鏈接 if (mysqli_connect_error()) { die("數據庫鏈接失敗: " . mysqli_connect_error()); } */ // 建立數據庫myDB $sql = "CREATE DATABASE test"; if ($conn->query($sql) === TRUE) { echo "數據庫建立成功"; } else { echo "<mark><br/>Error creating database: " . $conn->error."</mark>"; echo "<br/>"; }/* 注意: 當你建立一個新的數據庫時,你必須爲 mysqli 對象指定三個參數 (servername, username 和 password)。 Tip: 若是你使用其餘端口(默認爲3306),爲數據庫參數添加空字符串,指定端口號 如: new mysqli("localhost", "username", "password", "", port)*/ echo "鏈接成功<br/>"; $conn->close();//關閉鏈接 echo "關閉鏈接<br/>"; ?>
<?php //實例 (MySQLi 面向對象)建立表格 date_default_timezone_set("Asia/Shanghai"); echo date('Y-m-d H:i:s',strtotime('now')); echo "<br/>"; $servername = "127.0.0.1"; $username = "root"; $password = "123456"; $dbname = "myDB"; // 建立鏈接 $conn = new mysqli($servername, $username, $password, $dbname); // 檢測鏈接 if ($conn->connect_error) { die("鏈接失敗: " . $conn->connect_error); } // 使用 sql 建立數據表MyGuests $sql = "CREATE TABLE MyGuests ( id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, email VARCHAR(50), reg_date TIMESTAMP )"; echo "<mark>"; if ($conn->query($sql) === TRUE) { echo "Table MyGuests created successfully"; } else { echo "建立數據表錯誤: " . $conn->error; }echo "</mark>"; //鏈接 $conn->close(); ?>
<?php //實例 (MySQLi 面向過程)--建立數據庫鏈接 echo "實例 (MySQLi面向過程)<br/>"; date_default_timezone_set("Asia/Shanghai"); echo date('Y-m-d H:i:s',strtotime('now')); $servername = "127.0.0.1"; $username = "root"; $password = "123456"; // 建立鏈接 $conn = mysqli_connect($servername, $username, $password); // 檢測鏈接 if (!$conn) { die("Connection failed: " . mysqli_connect_error()); } //建立數據庫 $sql = "CREATE DATABASE myDB"; if (mysqli_query($conn, $sql)) { echo "<br/>數據庫建立成功"; } else { echo "<mark><br/>Error creating database: " . mysqli_error($conn)."</mark>"; } echo "<br/>鏈接成功<br/>"; mysqli_close($conn); echo "關閉鏈接<br/>"; ?>
<?php //實例 (MySQLi 面向過程)建立數據庫鏈接 date_default_timezone_set("Asia/Shanghai"); echo date('Y-m-d H:i:s',strtotime('now')); echo "<br/>"; $servername = "127.0.0.1"; $username = "root"; $password = "123456"; $dbname = "myDB"; // 建立鏈接 $conn = mysqli_connect($servername, $username, $password, $dbname); // 檢測鏈接 if (!$conn) { echo "<mark>"; die("鏈接失敗: " . mysqli_connect_error()); echo "</mark>"; } // 使用 sql 建立數據表MyGuests $sql = "CREATE TABLE MyGuests ( id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, email VARCHAR(50), reg_date TIMESTAMP )"; echo "<mark>"; if (mysqli_query($conn, $sql)) { echo "數據表 MyGuests 建立成功"; } else { echo "建立數據表錯誤: " . mysqli_error($conn); } echo "</mark>"; mysqli_close($conn); ?>
<?php //實例 (PDO)--建立數據庫鏈接 echo "實例 (PDO)<br/>"; date_default_timezone_set("Asia/Shanghai"); echo date('Y-m-d H:i:s',strtotime('now')); $servername = "127.0.0.1"; $username = "root"; $password = "123456"; try { $conn = new PDO("mysql:host=$servername;dbname=mysql", $username, $password); echo "<br/>鏈接成功<br/>"; //建立數據庫 // 設置 PDO 錯誤模式爲異常 $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $sql = "CREATE DATABASE myDBPDO"; // 使用 exec() ,由於沒有結果返回 $conn->exec($sql); echo "<mark>數據庫建立成功<br></mark>"; }catch(PDOException $e) { echo "<mark>".$sql . "<br>" . $e->getMessage()."</mark>"; echo "<br/>"; } $conn = null; echo "關閉鏈接<br/>"; ?>
<?php //實例 (PDO)--建立數據庫鏈接 echo "實例 (PDO)<br/>"; date_default_timezone_set("Asia/Shanghai"); echo date('Y-m-d H:i:s',strtotime('now')); echo "<br/>"; $servername = "127.0.0.1"; $username = "root"; $password = "123456"; $dbname = "myDBPDO"; try { $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password); // 設置 PDO 錯誤模式,用於拋出異常 $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // 使用 sql 建立數據表 $sql = "CREATE TABLE MyGuests ( id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, email VARCHAR(50), reg_date TIMESTAMP )"; // 使用 exec() ,沒有結果返回 $conn->exec($sql); echo "<mark>數據表 MyGuests 建立成功</mark>"; } catch(PDOException $e) { echo "<mark><br>".$sql . "<br>" . $e->getMessage()."<br></mark>"; } //關閉鏈接 $conn = null; ?>
本文代碼參考修改自http://www.runoob.com/php/php-mysql-connect.html
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