PHP 忒聊
綴豖
ヶ輛
mysql_num_rows
(PHP 3, PHP 4)
Description
mysql_num_rows() returns the number of rows in a result set. This command is only valid for SELECT statements. To retrieve the number of rows affected by a INSERT, UPDATE or DELETE query, use mysql_affected_rows().
瞰赽 1. mysql_num_rows() example
?php $link = mysql_connect("localhost", "mysql_user", "mysql_password"); mysql_select_db("database", $link); $result = mysql_query("SELECT * FROM table1", $link); $num_rows = mysql_num_rows($result); echo "$num_rows Rows\n";?
蛁: If you use mysql_unbuffered_query(), mysql_num_rows() will not return the correct value until all the rows in the result set have been retrieved.
See also: mysql_affected_rows(), mysql_connect(), mysql_data_seek(), mysql_select_db(), and mysql_query().
For downward compatibility mysql_numrows() can also be used. This is deprecated however.
綴豖
れ萸
ヶ輛
mysql_num_fields
奻珨撰
mysql_pconnect