(PHP 5, PHP 7, PHP 8)
mysqli::$info -- mysqli_info — 返回最近执行的 SQL 语句的信息
面向对象风格
过程化风格
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 |
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。
最近执行的 SQL 语句的相关信息。
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