mysql_num_rows 0
Count will return a value, and you cannot count and then call mysql_num_rows. It is either one of the other. You could do $isExist = mysql_query("Select ... ,PHP mysql_num_rows 函式用來統計MySQL SELECT 結果集的行數，當PHP ... 行數，請使用mysql_affected_rows 函式，不過mysql_affected_rows 在MySQL 5.5.0 ... ,There's nothing obviously wrong with your code. The most obvious explanation is that the query being submitted to the database is not returning any rows. , There's nothing wrong with your query, but there is something wrong with your error reporting. For example, the following line:
| 相關軟體 MySQL 資訊 | |
|---|---|
 mysql_num_rows 0 相關參考資料
If mysql_num_rows equals to ZERO is NOT working - Stack Overflow
Count will return a value, and you cannot count and then call mysql_num_rows. It is either one of the other. You could do $isExist = mysql_query("Select ... https://stackoverflow.com mysql_num_rows 函式- Wibibi
PHP mysql_num_rows 函式用來統計MySQL SELECT 結果集的行數，當PHP ... 行數，請使用mysql_affected_rows 函式，不過mysql_affected_rows 在MySQL 5.5.0 ... https://www.wibibi.com mysql_num_rows() returning 0 - Stack Overflow
There's nothing obviously wrong with your code. The most obvious explanation is that the query being submitted to the database is not returning any rows. https://stackoverflow.com mysql_num_rows() returns zero - Stack Overflow
There's nothing wrong with your query, but there is something wrong with your error reporting. For example, the following line: https://stackoverflow.com |