Mysql Stored Procedure incorrect number of arguments

Mysql tutorial Stored Procedure incorrect number of arguments

Drop procedure 'chaxun _ name_ps tutorial '//
Create definer = 'root' @ 'localhost' PROCEDURE 'chaxun _ name_ps '(in c_id

Int, out c_phone char, out c_pwd char)
READS SQL DATA
Begin
Select phone, pwd
From caopanshou
Where id = 18;
Select found_rows () into c_phone, c_pwd;
End

Call Method

Call chaxun_name_ps (1, 1, 1)

Unknown Method

Select @ chaxun_name_ps ()

The return value is Null.

Some may not know the function of the found_rows () function.

Select count (*) from t mysql functions with the same functions found_rows

<? Php tutorial

$ SQL = "select count (*) from t ";

$ Res = mysql_query ($ SQL );

$ Num = mysql_result ($ res, 0 );

$ SQL = "select topic, detail from t limit 5 ";

// *** I will not write the following:

?>

However, use the built-in mysql function found_rows ();