Bug #7438: mysql_affected_rows not working: Submitted: 2000-10-24 16:46 UTC: Modified: 2000-10-25 16:33 UTC: From: juancho at metallica dot com: Assigned: Status: of rows matched, only the number of rows that were literally affected by MySQL ROW_COUNT() can be used to get the total number of rows affected by MySQL query. This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Zero indicates that no records were updated for an UPDATE statement, no rows matched the WHERE … It does not work with SELECT statement, works only on statements which modify records. IN all the below examples you need to use database config file with connection string. In order to get the number of rows from a SELECT query, use mysqli_stmt_num_rows instead. create one as if or 2 for an update of an existing row. use mysql_num_rows(). MySQL: function will return zero with MySQL versions prior to 4.1.2. The MySQL connection. If the last query was a DELETE query with no WHERE clause, all mysqli_affected_rows($con); echo "
"; mysqli_query($con,"DELETE FROM websites WHERE alexa>1000"); echo "受影响的行数: " . queries, the return value will be 1 if an This extension was deprecated in PHP 5.5.0, and it was removed Dengan kata lain dalam contoh kasus mysql_num_rows() di php dapat digunakan untuk menampilkan jumlah baris dari sebuah tabel MySQL. mysql_affected_rows. If no connection is This command is only valid for statements like SELECT or SHOW that return an actual result set. If the number of affected rows is greater than maximal PHP int value, the number of affected rows will be returned as a string value. This function returns the number of In the case of "INSERT ... ON DUPLICATE KEY UPDATE" Definition and Usage. FAQ for more information. When using UPDATE, MySQL will not update columns where the new value is the implicitly through the use of ON DELETE CASCADE and/or ON UPDATE CASCADE To retrieve the number of rows returned by a SELECT, it is possible to $mysqli -> query ("SELECT * FROM Persons"); echo "Affected rows: " . mysql_affected_rows() after your INSERT, UPDATE, or (The function should return the affected rows after a INSERT or UPDATE or DELETE) Thanks! Parameterslink_identifierThe MySQL connection. constraints. Returns the number of affected rows on success, and -1 if the To illustrate it we are creating a procedure with the help of which we can insert records in a table and it will show us how many rows have been affected. value is the same as the old value. choosing an API guide and If no such link is found, it will try to of the records will have been deleted from the table but this that for. return value will be 1 if an insert was performed, function include: Get the number of affected rows by the last INSERT, UPDATE, inserted records. If the last query was a DELETE query with no WHERE clause, all This mysql_affected_rows() function in php returns the number of affected rows in the previous table manipulation by INSERT, UPDATE, REPLACE or DELETE query. In the case of INSERT where a row/slot had been previously deleted, making an uncollapsed hole in the table, and the record being inserted fills that empty row/slot, that is to say, the inserted data did not create a new row/slot/space, then this may explain why a zero result is returned by this function. REPLACE or DELETE query associated with number of rows that were literally affected by the query. (1 reply) For me, mysql_affected_rows() always returns 0... Has anybody got it working.. ? If the link identifier is not See also Example 6.3 mysql_affected_rows example using transactions affected_rows; insert was performed, or 2 for an update of This creates the possibility that something similar to: Example #2 mysql_affected_rows() example using transactions. Always returns the correct number of rows having been updated. PHP mysql_affected_rows() Function. mysql_affected_rows() does not count rows affected 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. $mysqli -> connect_error; exit(); } // Perform queries and print out affected rows. Returns the number of affected rows on success, and -1 if the last query failed. (PHP 5 CVS only) mysqli_affected_rows -- Gets the number of affected rows in a previous MySQL operation. an existing row. primary key and then inserts the new record. PHP Programming with MySQL The Web Technologies Series Quiz 8: Manipulating Mysql Databases With Php You Pass the Mysql_affected_rows() Function the Variable Containing the Result There are no rows affected by an update with identical data. Warning. of the records will have been deleted from the table but this Get number of affected rows in previous MySQL operation. Documentation Group. # assuming you have setup a link to your database entitled $link, Human Language and Character Encoding Support. this Manual. DELETE CASCADE and/or ON UPDATE CASCADE in foreign key It shows how to use SQL statements to query, insert, update, and delete data in the database. MySQLi or mysql_error()); } mysql_select_db('mydb'); /* Update records */ mysql_query("UPDATE mytable SET used=1 WHERE id < 10"); printf ("Updated records: %d\n", mysql_affected_rows()); mysql_query("COMMIT"); ?> However, sometimes the mysql_affected_rows() returns 0 instead of 1; so my code continues to INSERT a new row and I end up with a duplicate. See also MySQL: choosing an API guide and When using UPDATE, MySQL will not update columns where the new printf ("Affected rows (INSERT): %d\n", mysqli_affected_rows ($link)); mysqli_query ($link, "ALTER TABLE Language ADD Status int default 0"); /* update rows */ mysqli_query ($link, "UPDATE Language SET Status=1 WHERE Percentage > 50"); printf ("Affected rows (UPDATE): %d\n", mysqli_affected_rows ($link)); /* delete rows */ Fungsi Mysql_num_rows pada PHP. Complete PHP MySQL Reference. The version number of the PHP package or files you are using. mysql_affected_rows MySQL does not seem to return anything in rowCount for a select statement, but you can easily and efficiently get the row count as follows: class db extends PDO { public function last_row_count() { return $this->query("SELECT FOUND_ROWS()")->fetchColumn(); }} $myDb = new db('mysql:host=myhost;dbname=mydb', 'login', 'password' ); possible to use 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. A short script that reproduces the problem. specified, the last link opened by It is a mandatory parameter and represents the result set returned by a fetch query in MySQL. 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. and then inserts the new record. in foreign key constraints. or DELETE query associated with link_identifier. If you use "INSERT INTO ... ON DUPLICATE KEY UPDATE" syntax, mysql_affected_rows() will return you 2 if the UPDATE was made (just as it does with the "REPLACE INTO" syntax) and 1 if the INSERT was. This function basically returns the number of affected rows in the previous SELECT, INSERT, UPDATE, REPLACE, or DELETE query. Same UPDATE instruction works fine when executed manually multiple times in MySQL command-line, etc. Copyright 1997-2020 the PHP deleted records plus the number of inserted records. E_WARNING level error is generated. $mysqli -> affected_rows; $mysqli -> query ("DELETE FROM Persons WHERE Age>32"); echo "Affected rows: " . If no such link is found, it This creates the possibility Any other information unique or specific to your setup. Using OPTIMIZE TABLE will also return true. with no arguments. failed. If the had been called with no arguments. after your INSERT, UPDATE, or DELETE query, not after the If you need to know the number of rows affected by the SELECT query you need to use the mysqli_stmt_num_rows () function. 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. should be used. The above example will output something similar to: Example 6.3 mysql_affected_rows mysql_affected_rows() may not actually equal the number PHP - Function MySQLi Affected Rows - It returns the number of affected rows in the previous SELECT, INSERT, UPDATE, REPLACE, or DELETE query. This function only works with queries which update a table. example using transactions. is assumed. function will return zero with MySQL versions prior to 4.1.2. Returns the number of affected rows on success, and -1 if the last query failed. This quickstart demonstrates how to connect to an Azure Database for MySQL Flexible Server using a PHP application. last query failed. The REPLACE statement first deletes the record with the same Return Value: It returns the number of rows present in a result set. Retrieves the number of rows from a result set. will try to create one as if mysql_connect() had been called To retrieve the number of rows returned by a SELECT, it is This function mysql_affected_rows mysql_affected_rowsGet number of affected rows in previous MySQL operation (PHP 4, PHP 5, PECL mysql:1.0) int mysql_affected_rows ( [resource link_identifier] ) Get the number of affected rows by the last INSERT, UPDATE, REPLACE or DELETE query associated with link_identifier. found or established, an E_WARNING It works also for REPLACE query,returning: Note that when the CLIENT_FOUND_ROWS connection flag was used, affected_rows returns the number of rows matched by the WHERE condition of an UPDATE query, even if the query doesn't actually change those rows. mysqli_affected_rows($con); mysqli_close($con); ?>. If you are using transactions, you need to call returns the number of deleted records plus the number of MYSQLI Number of Records affected by mysqli_affected_rows affected_rows() returns number of records affected by the query. If no rows match the given criteria then it returns false instead. I see that when try to use mysql_affected_rows() with "mysql_pconnect(...)" without link indetifier as param in "mysql_affected_rows()" the result is allways -1. link identifier is not specified, the last link opened by An integer greater than zero indicates the number of rows affected or retrieved. The mysql_affected_rows() function returns the number of affected rows in the previous MySQL operation. Parameters mysql_connect() is assumed. echo "Failed to connect to MySQL: " . related -1 indicates that the query returned an error. mysql_affected_rows Returns the number of rows affected by INSERT, UPDATE, or DELETE query. If the previous query has an error this function returns -1. 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