MySQLi
PHP Manual

mysqli::$info

mysqli_info

(PHP 5, PHP 7)

mysqli::$info -- mysqli_infoRetrieves information about the most recently executed query

说明

面向对象风格

过程化风格

string mysqli_info ( mysqli $link )

The mysqli_info() function returns a string providing information about the last query executed. The nature of this string is provided below:

Possible mysqli_info return values
Query type Example result string
INSERT INTO...SELECT... Records: 100 Duplicates: 0 Warnings: 0
INSERT INTO...VALUES (...),(...),(...) Records: 3 Duplicates: 0 Warnings: 0
LOAD DATA INFILE ... Records: 1 Deleted: 0 Skipped: 0 Warnings: 0
ALTER TABLE ... Records: 3 Duplicates: 0 Warnings: 0
UPDATE ... Rows matched: 40 Changed: 40 Warnings: 0

Note:

Queries which do not fall into one of the preceding formats are not supported. In these situations, mysqli_info() will return an empty string.

参数

link

仅以过程化样式:由mysqli_connect()mysqli_init() 返回的链接标识。

返回值

A character string representing additional information about the most recently executed query.

范例

Example #1 $mysqli->info example

面向对象风格

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

/* check connection */
if (mysqli_connect_errno()) {
    
printf("Connect failed: %s\n"mysqli_connect_error());
    exit();
}

$mysqli->query("CREATE TEMPORARY TABLE t1 LIKE City");

/* INSERT INTO .. SELECT */
$mysqli->query("INSERT INTO t1 SELECT * FROM City ORDER BY ID LIMIT 150");
printf("%s\n"$mysqli->info);

/* close connection */
$mysqli->close();
?>

过程化风格

<?php
$link 
mysqli_connect("localhost""my_user""my_password""world");

/* check connection */
if (mysqli_connect_errno()) {
    
printf("Connect failed: %s\n"mysqli_connect_error());
    exit();
}

mysqli_query($link"CREATE TEMPORARY TABLE t1 LIKE City");

/* INSERT INTO .. SELECT */
mysqli_query($link"INSERT INTO t1 SELECT * FROM City ORDER BY ID LIMIT 150");
printf("%s\n"mysqli_info($link));

/* close connection */
mysqli_close($link);
?>

以上例程会输出:

Records: 150  Duplicates: 0  Warnings: 0

参见


MySQLi
PHP Manual