mysql_num_rows()- 取得结果集中行的数目 - 取得最近一条查询的信息 There are no rows affected by an update with identical data. Here's a little function I've been using for a while now, pass it two parameters (action command (1 or 0 see notes)) and a sql statement. It returns a si...
如果使用事务处理(transactions),需要在 INSERT,UPDATE 或 DELETE 查询后调用 mysql_affected_rows() 函数,而不是在 COMMIT 命令之后。 注意: SELECT 语句 要获取 SELECT 所返回的行数,可以用 mysql_num_rows()。 注意: Cascaded 外键 mysql_affected_rows() does not count rows affected implicitly throug...
/* update rows */ mysqli_query($link, "UPDATE Language SET Status=1 WHERE Percentage > 50"); printf("Affected rows (UPDATE): %d\n", mysqli_affected_rows($link)); /* delete rows */ mysqli_query($link, "DELETE FROM Language WHERE Percentage < 50"); printf("Affected rows (DELETE...
PHP mysqli_affected_rows() 函数PHP MySQLi 参考手册实例 从不同的查询中输出所影响记录行数: <?php // 假定数据库用户名:root,密码:123456,数据库:RUNOOB $con=mysqli_connect("localhost","root","123456","RUNOOB"); if (mysqli_connect_errno($con...
mysqli_affected_rows(mysqli$mysql):int|string Returns the number of rows affected by the lastINSERT,UPDATE,REPLACEorDELETEquery. Works likemysqli_num_rows()forSELECTstatements. 参数 mysql 仅以过程化样式:由mysqli_connect()或mysqli_init()返回的mysqli对象。
这个mysqli_affected_rows()如果在 INSERT、UPDATE、REPLACE 或 DELETE 查询之后调用,则函数返回受前一操作影响的行数。 在select 语句之后使用时,此函数返回行数。 用法 mysqli_affected_rows($con) 参数 返回值 PHP mysqli_affected_rows() 函数返回一个整数值,指示受前一个(SELECT、INSERT、UPDATE、REPLACE 或...
mysqli_stmt_affected_rows(mysqli_stmt$statement):int|string Returns the number of rows affected byINSERT,UPDATE, orDELETEquery. Works likemysqli_stmt_num_rows()forSELECTstatements. 参数 statement 仅以过程化样式:由mysqli_stmt_init()返回的mysqli_stmt对象。
echo"受影响的行数: ". mysqli_affected_rows($con); mysqli_close($con); ?> 定义和用法 mysqli_affected_rows() 函数返回前一次 MySQL 操作(SELECT、INSERT、UPDATE、REPLACE、DELETE)所影响的记录行数。 语法 mysqli_affected_rows(connection); ...
$mysqli->query("DROP TABLE Language"); /* close connection */ $mysqli->close(); ?> 到此,关于“PHP中mysqli_affected_rows作用行数返回值的实例分析”的学习就结束了,希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习,快去试试吧!若想继续学习更多相关知识,请继续关注亿速云网站,小编会...
echo"Failed to connect to MySQL: ". mysqli_connect_error(); exit(); } // Perform queries and print out affected rows mysqli_query($con,"SELECT * FROM Persons"); echo"Affected rows: ". mysqli_affected_rows($con); mysqli_query($con,"DELETE FROM Persons WHERE Age>32"); ...