Get the number of changed rows after php updates mysql

Get the number of changed rows after php updates mysql_PHP tutorial

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Release： 2016-07-13 17:06:07

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Get the number of changed rows after a php updates mysql. Provide a mysql function in php to get the number of records affected by the last executed query: mysql_affected_rows(), which returns the most recent INSERT, UPDATE or DELETE query associated with the connection handle. Number of record rows affected. FOUND_ROWS() : select ROW_COUNT() : update delete insert.

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Example:

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代码如下	复制代码
found_rows() : select row_count() : update delete insert

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found_rows() : select

row_count() : update delete insert

代码如下

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drop database if exists `mytest`;
create database `mytest`;
use `mytest`;

drop table if exists `MyTestTable`;
create table `MyTestTable`(`ID` int ,`Name` varchar(10));

insert into `MyTestTable`(`ID`,`Name`)
select '1','role1' union all
select '2','role2' union all
select '3','role3';
select row_count(); -- 输出3(返回新添加的记录数),[注:如果使用insert into...values只返回1]

select * from `MyTestTable`;select found_rows(); -- 输出3(返回选择的行数)
update `MyTestTable` set `Name`='people';select row_count(); -- 输出3(返回修改的行数)
delete from `MyTestTable`;select row_count(); -- 输出3(返回删除的行数)

代码如下	复制代码
function mysql_modified_rows () { $info_str = mysql_info(); $a_rows = mysql_affected_rows(); ereg("Rows matched: ([0-9]*)", $info_str, $r_matched); return ($a_rows < 1)?($r_matched[1]?$r_matched[1]:0):$a_rows; }

Note: It needs to be used in conjunction with the corresponding operation, otherwise the returned values are only 1 and -1 (both incorrect values)

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drop database if exists `mytest`; create database `mytest`; use `mytest`; drop table if exists `MyTestTable`; create table `MyTestTable`(`ID` int ,`Name` varchar(10)); insert into `MyTestTable`(`ID`,`Name`) select '1','role1' union all select '2','role2' union all select '3','role3'; select row_count(); -- Output 3 (returns the number of newly added records), [Note: If insert into...values is used, only 1 is returned] select * from `MyTestTable`;select found_rows(); -- Output 3 (returns the number of selected rows) update `MyTestTable` set `Name`='people';select row_count(); -- Output 3 (returns the number of modified rows)

delete from `MyTestTable`;select row_count(); -- Output 3 (returns the number of deleted rows)

Solving the problem of getting the number of affected rows after php updates mysql

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function mysql_modified_rows () { $info_str = mysql_info(); $a_rows = mysql_affected_rows(); ereg("Rows matched: ([0-9]*)", $info_str, $r_matched); return ($a_rows < 1)?($r_matched[1]?$r_matched[1]:0):$a_rows; } http://www.bkjia.com/PHPjc/630723.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/630723.htmlTechArticleGet the number of changed rows after updating mysql in php, and provide the mysql function in php to get the impact of the last executed query Number of records: mysql_affected_rows(), returns the latest connection handle...