share | improve this answer | follow | answered Feb 21 '12 at 8:07 Specifies which data pointer to use. The behaviour of mysqli_num_rows depends on whether buffered or unbuffered result sets are being used. You can read more about picking a database API here. The mysql functions as a whole are deprecated, it is not only mysql_num_rows. – Quinn Comendant Jan 21 '14 at 7:13 Returns the number of rows in the result set. I updated the following code (mysqli instead of mysql) that I used to print number of rows in a given table, but it doesn't work as it used to. I successfully got my answer from this post and marked it as answered. This command is only valid for statements like SELECT or SHOW that return an actual result set. Object oriented style int mysqli_result->num_rows ; Procedural style int mysqli_num_rows (mysqli_result result); Returns the number of rows in the result set. You should switch to mysqli or POD database library. See also MySQL: choosing an API guide and related FAQ for more information. This function returns FALSE on failure. Alternatives to this function include: In short all mysql_* functions are deprecated. Definition and Usage. Hàm mysqli_num_rows() trong PHP Đăng bởi: phungminhduong - Vào ngày: 16-05-2017 - View: 8269 Hàm mysqli_num_rows() sẽ trả về số hàng trong tập hợp kết quả truyền vào. mysql_num_rows(data) Parameter Description; data: Required. this is just a database tutorial that im working on and i hope that maybe someone can tell me whats goin on. Instead, the MySQLi or PDO_MySQL extension should be used. Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in C:\www\databaseconnect.php on line 23 i get that error, ive commented line number twentythree. Syntax. But you should get value returned by count(), mysql_num_rows is not for operations like this. Alternative for mysql_num_rows using PDO ^ I believe it isn't the same question - The other authors code is different to mine, which needed a different answer. PHP mysql_num_rows() Function. Description. I have upgraded PHP on my server from version 5 to 7 and I found out that mysql_* functions were removed and now I should use mysqli or PDO. Is there a function equivalent to mysql_num_rows to count the number of columns in a PHP mysql recordset?. To retrieve the number of rows affected by a INSERT, UPDATE, REPLACE or DELETE query, use mysql_affected_rows() . If not, rather than just saying so can you please advise me of the best way to make a … PDO's rowCount() method "returns the number of rows affected by the last DELETE, INSERT, or UPDATE statement"—not the same thing. Complete PHP MySQL Reference. This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. The mysql_num_rows() function returns the number of rows in a recordset. 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