PHP mysqli info() 函数

定义和用法

info / mysqli_info() 函数返回有关上次执行的查询的信息。

此函数适用于以下查询类型：

• INSERT INTO...SELECT...
• INSERT INTO...VALUES (...),(...),(...)
• LOAD DATA INFILE ...
• ALTER TABLE ...
• UPDATE ...

实例

例子 1 - 面向对象风格

返回有关上次执行的查询的信息：

<?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();
}

// 执行一些查询
$mysqli -> query("CREATE TABLE testPersons LIKE Persons");
$mysqli -> query("INSERT INTO testPersons SELECT * FROM Persons ORDER BY LastName");

echo $mysqli -> info;

$mysqli -> close();
?>

例子 2 - 过程式风格

返回有关上次执行的查询的信息：

<?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();
}

// 执行一些查询
mysqli_query($con, "CREATE TABLE testPersons LIKE Persons");
mysqli_query($con, "INSERT INTO testPersons SELECT * FROM Persons ORDER BY LastName");

echo mysqli_info($con);

mysqli_close($con);
?>

语法

面向对象风格：

$mysqli -> info

过程式风格：

mysqli_info(connection)

技术细节