This command is only valid for statements like SELECT or SHOW that return an actual result set. The use of mysqli_stmt_num_rows() depends on whether or not you used mysqli_stmt_store_result() to buffer the entire result set in the statement handle.. If you use mysqli_stmt_store_result(), mysqli_stmt_num_rows() may be called immediately. share | improve this answer | follow | answered Feb 21 '12 at 8:07 This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. But you should get value returned by count(), mysql_num_rows is not for operations like this. To retrieve the number of rows affected by a INSERT, UPDATE, REPLACE or DELETE query, use mysql_affected_rows() . 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. – Quinn Comendant Jan 21 '14 at 7:13 Complete PHP MySQL Reference. mysql_num_rows(data) Parameter Description; data: Required. Is there a function equivalent to mysql_num_rows to count the number of columns in a PHP mysql recordset?. @BillKarwin, did you mean mysql_num_rows()? 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. The mysql functions as a whole are deprecated, it is not only mysql_num_rows. Definition and Usage. Everything is working fine now (no help from the other 'duplicate' thread. mysql_num_rows function retrieves the number of rows from a result set. 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. 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. 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. Syntax. 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. 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. I successfully got my answer from this post and marked it as answered. Description. The mysql_num_rows() function returns the number of rows in a recordset. this is just a database tutorial that im working on and i hope that maybe someone can tell me whats goin on. In short all mysql_* functions are deprecated. You can read more about picking a database API here. Alternatives to this function include: You should switch to mysqli or POD database library. 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