Php/docs/mysqli.info
mysqli::$info
mysqli_info
(PHP 5, PHP 7)
mysqli::$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 $link
) : 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：
| 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 |
Note:
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。
返回值
最近执行的 SQL 语句的相关信息。
范例
Example #1 $mysqli->info 例程
面向对象风格
<?php$mysqli = new mysqli("localhost", "my_user", "my_password", "world");/* 检查连接 */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", $mysqli->info);/* 关闭连接 */$mysqli->close();?>
过程化风格
<?php$link = mysqli_connect("localhost", "my_user", "my_password", "world");/* 检查连接 */if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit();}mysqli_query($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));/* 关闭连接 */mysqli_close($link);?>
以上例程会输出：
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 a result
