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mysqli::$info

mysqli_info

(PHP 5, PHP 7, PHP 8)

mysqli::$info -- mysqli_info — 返回最近执行的 SQL 语句的信息

说明

面向对象风格

?string $mysqli->info;

过程化风格

mysqli_info(mysqli $mysql): ?string

mysqli_info() 函数返回一个包含最近执行的 SQL 语句信息的字符串。下面有一些参考样例：

**mysqli_info 可能的返回值**
SQL 语句类型	返回结果字符串示例
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

注意:
如果所执行的 SQL 语句不是上面列出来的这几种类型的， mysqli_info() 函数会返回一个空字符串。

参数

mysql: 仅以过程化样式：由 mysqli_connect() 或 mysqli_init() 返回的 mysqli 对象。

返回值

最近执行的 SQL 语句的相关信息。

示例

示例 #1 $mysqli->info 示例

面向对象风格

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

$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);

过程化风格

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

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));

以上示例会输出：

Records: 150  Duplicates: 0  Warnings: 0

参见

mysqli_affected_rows() - Gets the number of affected rows in a previous MySQL operation
mysqli_warning_count() - Returns the number of warnings from the last query for the given link
mysqli_num_rows() - Gets the number of rows in the result set

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User Contributed Notes 2 notes

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user at biglake dot com ¶

13 years ago


Might save someone some time...

<?php
$prototype='Rows matched: 0 Changed: 1 Warnings: 2';
list($matched, $changed, $warnings) = sscanf($prototype, "Rows matched: %d Changed: %d Warnings: %d");
?>

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-3

vzverev [at] newmail.ru (Vasiliy Zverev) ¶

7 years ago


If inserted just one row, mysqli_info() returns empty string which might be confusing, but mysqli_affected_rows() returns 1 in this case.

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