PHP mysqli stmt_init() 函数

示例 - 面向对象风格

初始化一条语句并返回一个与 stmt_prepare() 一起使用的对象：

<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");

if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}

$city="Sandnes";

// Create a prepared statement
$stmt = $mysqli -> stmt_init();

if ($stmt -> prepare("SELECT District FROM City WHERE Name=?")) {
// Bind parameters
$stmt -> bind_param("s", $city);

// Execute query
$stmt -> execute();

// Bind result variables
$stmt -> bind_result($district);

// Fetch value
$stmt -> fetch();

printf("%s is in district %s", $city, $district);

// Close statement
$stmt -> close();
}

$mysqli -> close();
?>

查看底部的程序样式示例。

定义和用法

stmt_init() / mysqli_stmt_init() 函数初始化一条语句并返回一个适合 mysqli_stmt_prepare() 的对象。

语法

面向对象风格：

$mysqli -> stmt_init()

程序风格：

mysqli_stmt_init( connection)

参数值

Parameter	Description
connection	Required. Specifies the MySQL connection to use

技术细节

返回值：	返回一个对象
PHP 版本：	5+

示例 - 程序风格

初始化语句并返回一个与 mysqli_stmt_prepare() 一起使用的对象：

<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");

if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit;
}

$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);
?>

❮ PHP MySQLi 参考