简介：:本篇文章主要介绍了mysql_affected_rows和mysql_num_rows，对于PHP教程有兴趣的同学可以参考 … my_ulonglong mysql_affected_rows(MYSQL *mysql) 描述. mysql_affected_rows (PHP 4, PHP 5) mysql_affected_rows — Возвращает число затронутых прошлой операцией рядов Внимание Данное расширение устарело, начиная с версии PHP 5.5.0, и PHP mysql_affected_rows(),mysql_affected_rows函数 取得前一次 MySQL 操作所影响的记录行数 You could also go ahead and add the database to connect to right there in the mysqli_connect parameters and eliminate mysql_select_db. Returns the number of affected rows by the last operation associated with mysql, if the operation was an "upsert" (INSERT, UPDATE, DELETE or REPLACE) statement, or -1 if the last query failed. Función mysql_affected_rows() my_ulonglong mysql_affected_rows(MYSQL *mysql) Devuelve el número de filas afectadas por la última sentencia UPDATE, las borradas por la última sentencia DELETE o insertadas por la última sentencia INSERT.Debe ser llamada inmediatamente después de la llamada a mysql_query() para las sentencias UPDATE, DELETE o INSERT. mysql関数はphp5.5で非推奨となりphp7.0以降では使えなくなりました。なのでphp7以降にバージョンアップすると Fatal error: Uncaught Error: Call to undefined function mysql_connect() のようなエラーが出てしまいます。ここではmysql関数をmysqli関数に代用変換する方法を書きます。 因此mysql_affected_rows()一般用来在DELETE, INSERT , REPLACE , UPDATE语句执行完成之后判断数据表中变化的行数（如果数据表没有变化，则行数为0）。 DELETE语句执行成功，返回删除的行数，INSERT INTO TABLE VALUES 或者 INSERT INTO TABLES SET 都是返回插入成功的行数，这些是比 … When using UPDATE, MySQL will not update columns where the new value is the same as the old value. mysql_affected_rows() may be called immediately after executing a statement with mysql_query() or mysql_real_query().It returns the number of rows changed, deleted, or inserted by the last statement if it was an UPDATE, DELETE, or INSERT.For SELECT statements, mysql_affected_rows() works like mysql_num_rows(). This function returns the number of affected rows on success, or … Syntax my_ulonglong mysql_affected_rows(MYSQL * mysql); mysql is a connection identifier, which was previously allocated by mysql_init() or mysql_real_connect().. 简介：本篇文章收集了关于10有关mysql_affected_rows()函数的文章，推荐给大家. 返回值. (The function should return the affected rows after a INSERT or UPDATE or DELETE) Thanks! Return Values. 有关mysql_affected_rows()函数的文章推荐10篇. PHP mysql_affected_rows 函式可以用來統計＂前一次＂執行 MySQL 語法所影響的記錄行數，可以統計的項目包含 INSERT、UPDATE、DELETE 等動作，與 mysql_affected_rows 類似的函式為 mysql_num_rows，但 mysql_num_rows 僅能統計 SELECT 結果集的行數。 PHP mysql_affected_rows 函式語法 Description. Fungsi Mysql_num_rows pada PHP. (1 reply) For me, mysql_affected_rows() always returns 0... Has anybody got it working.. ? They wouldn't need the procedure to use the ROW_COUNT function. Dengan kata lain dalam contoh kasus mysql_num_rows() di php dapat digunakan untuk menampilkan jumlah baris dari sebuah tabel MySQL. Fungsi mysql_num_rows pada php adalah untuk mengetahui berapa jumlah baris di dalam tabel database yang dipanggil oleh perintah mysql_query() sehingga nilai dapat ditampilkan dalam bentuk angka numerik. This creates the possibility that mysql_affected_rows() may not actually equal the number of rows matched, only the number of rows that were literally affected by the query. SELECT 文の場合は、 mysqli_affected_rows() は mysqli_num_rows() と同じように動作します。 2. mysql_affected_rows和mysql_num_rows. mysql_affected_rows() ใช้นับจำนวนแถวที่ได้รับผลกระทบจากการประมวลผลคำสั่ง INSERT, UPDATE, DELETE ไปยังฐานข้อมูล When using UPDATE, MySQL will not update columns where the new value is the same as the old value. Q 27 The mysql_query() function returns a result pointer that represents the query results when the SELECT or SHOW statement which returns a resultset. Bug #23383: mysql_affected_rows() returns different values than mysql_stmt_affected_rows() Submitted: 17 Oct 2006 17:42: Modified: 30 Nov 2006 20:21 If the last query was a DELETE query with no WHERE clause, all of the records will have been deleted from the table but this function will return zero with MySQL versions prior to 4.1.2. This is OK if there is no variable to store the result, however if a variable was used it is possible that there may be logic somewhere deep in the code that will be using this variable to check the valid connection to the database. When using UPDATE, MySQL will not update columns where the new value is the same as the old value. PHP mysqli_num_rows() 函数 PHP MySQLi 参考手册 返回结果集中行的数量： 定义和用法 mysqli_num_rows() 函数返回结果集中行的数量。 语法 mysqli_num_rows(result); 参数 描述 result 必需。规定由 mysqli_query()、mysqli_store_result() 或 mysqli_use_result().. When using UPDATE query, MySQL will not update columns where the new value is same as the old value. This creates the possibility that mysql_affected_rows may not actually equal the number of rows matched, only the number of rows that were literally affected by the query. The mysql_affected_rows() function returns the number of affected rows in the previous MySQL operation. The ROW_COUNT function is the mysql_affected_rows equivalent in MySQL.. Keep in mind that the query browser is just a development tool. This creates the possibility that mysql_affected_rows() may not actually equal the number of rows matched, only the number of rows that were literally affected by the query. 直近の INSERT、 UPDATE、REPLACE あるいは DELETE クエリにより変更された行の数を返します。. 返回上次 UPDATE 更改的行数，上次 DELETE 删除的行数，或 上次 INSERT 语句插入的行数。 对于 UPDATE 、 DELETE 或 INSERT 语句，可在 mysql_query() 后立刻调用。 对于 SELECT 语句， mysql_affected_rows() 的工作方式与 mysql_num_rows() 类似。. mysql_affected_rows() 函数返回前一次 MySQL 操作所影响的记录行数。执行成功则返回受影响的行的数。如果上一次查询失败的话，函数返回 -1。如果上一次操作是没有任何条件（WHERE）的 DELETE 查询，在表中所有的记录都会被删除，但本函数返回值在 4.1.2 版之前都为 0。 mysql_affected_rowsпринимает в соединительном звене, а не запрос.Вы можете оставить этот параметр пустым, и он будет относиться к последнему запросу выполненного на этой связи. When using UPDATE, MySQL will not update columns where the new value is the same as the old value. Si el identificador de enlace no ha sido especificado, se asume por defecto el último enlace. PHP - Function MySQLi Affected Rows - It returns the number of affected rows in the previous SELECT, INSERT, UPDATE, REPLACE, or DELETE query. It doesn't execute queries the same way a PHP or JSP script would. mysql_affected_rows — Obtiene el número de filas afectadas en la anterior operación de MySQL Advertencia Esta extensión está obsoleta a partir de PHP 5.5.0, y será eliminada en el futuro. 当使用 UPDATE 查询，MySQL 不会将原值和新值一样的列更新。这样使得 mysql_affected_rows() 函数返回值不一定就是查询条件所符合的记录数，只有真正被修改的记录数才会被返回。 Here mysql_affected_rows() returns the number of rows affected by the last INSERT, UPDATE or DELETE query associated with link_identifier, this should be called before commit. 说说MySQL affected-rows 问题初见~ 当每次我们在在mysql中执行了DML(本文主要关注insert, update, delete, replace)命令后，取得的响应中常常看到有些像affected-rows的东西~ mysql_affected_rows() devuelve el número de filas afectadas en la ultima sentencia INSERT, UPDATE o DELETE sobre el servidor asociado con el identificador_de_enlace especificado. 当使用 UPDATE 查询，MySQL 不会将原值与新值一样的列更新。这样使得 mysql_affected_rows() 函数返回值不一定就是查询条件所符合的记录数，只有真正被修改的记录数才会被返回。 REPLACE 语句首先删除具有相同主键的记录，然后插入一个新记录。 Hàm mysql_affected_rows() sẽ lấy về số hàng đã bị ảnh hưởng bởi các câu truy vấn INSERT, UPDATE, REPLACE hoặc DELETE vừa truy vấn gần nhất. 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