# PHP mysqli_stmt_init() 函数 ## 实例 初始化声明并返回 mysqli_stmt_prepare() 使用的对象： ``` <?php $con=mysqli_connect("localhost","my_user","my_password","my_db"); // Check connection if (mysqli_connect_errno($con)) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $city="Sandnes"; // Create a prepared statement $stmt=mysqli_stmt_init($con); if (mysqli_stmt_prepare($stmt,"SELECT District FROM City WHERE Name=?")) { // Bind parameters mysqli_stmt_bind_param($stmt,"s",$city); // Execute query mysqli_stmt_execute($stmt); // Bind result variables mysqli_stmt_bind_result($stmt,$district); // Fetch value mysqli_stmt_fetch($stmt); printf("%s is in district %s",$city,$district); // Close statement mysqli_stmt_close($stmt); } mysqli_close($con); ?> ``` ## 定义和用法 mysqli_stmt_init() 函数初始化声明并返回 mysqli_stmt_prepare() 使用的对象。 ## 语法 mysqli_stmt_init(_connection_)_;_ | 参数 | 描述 | | --- | --- | | _connection_ | 必需。规定要使用的 MySQL 连接。 | ## 技术细节 | 返回值： | 返回一个对象。 | | :-- | --- | | PHP 版本： | 5+ | | :-- | --- |