stmt_init

❮ PHP MySQLi 参考手册

示例 - 面向对象的样式

初始化声明并返回 stmt_prepare() 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。

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定义和用法

stmt_init() / mysqli_stmt_init() 函数初始化声明并返回 mysqli_stmt_prepare() 使用的对象。

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语法

面向对象的风格:

$mysqli -> stmt_init()

程序风格:

mysqli_stmt_init(connection)

参数值

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+

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示例 - 程序样式

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");

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);
?>

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❮ PHP MySQLi 参考手册