Php/func mysqli stmt init

PHP mysqli stmt_init（）函数

MySQL PHP MySQLi参考

示例-面向对象的样式

初始化一条语句并返回要与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();

?>

在底部查看程序样式的示例。

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。

句法

面向对象的样式：

$mysqli -> stmt_init()

程序风格：

mysqli_stmt_init(connection)

参数值

参数	描述
connection	需要。指定要使用的MySQL连接

技术细节

返回值：	返回一个对象
PHP版本：	5+

示例-程序风格

初始化一条语句并返回一个要与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);

 ?>

MySQL PHP MySQLi参考