|
42樓 巨大八爪鱼
2015-5-30 22:12
$stmt->bindColumn("ItemSuburb", $suburb, PDO::PARAM_STR); 相當於$suburb = (string)$row["ItemSuburb"];
|
|
43樓 巨大八爪鱼
2015-5-30 22:21
回復:33樓 為了排查SQL的錯誤,可以使用errorInfo直接獲取MySQL輸出的錯誤信息,不用再把輸出的SQL語句複製到PMA中執行了。 比如: $sql = "SELECT * AFROM WiFiHotSpots"; $dbh->query($sql); $error = $dbh->errorInfo(); echo $error[2]; 輸出: You have an error in your SQL syntax; check the manual that corresponds
to your MariaDB server version for the right syntax to use near 'AFROM
WiFiHotSpots' at line 1
|
|
44樓 巨大八爪鱼
2015-5-30 22:22
回復:43樓 這樣我們就可以直接看出這個SQL語句中的AFROM出問題了
|
|
45樓 巨大八爪鱼
2015-5-30 22:25
|
|
46樓 巨大八爪鱼
2015-5-30 22:27
方法 bindParam() 和 bindValue() 非常相似。 唯一的区别就是前者使用一个PHP变量绑定参数,而后者使用一个值。 所以使用bindParam是第二个参数只能用变量名,而不能用变量值,而bindValue至可以使用具体值。 http://www.360doc.com/content/12/0703/16/10337467_222033042.shtml
|
|
48樓 巨大八爪鱼
2015-5-30 22:29
fetch();和mysql_fetch_array();一樣 但fetchAll();返回一個二維數組,可以獲取所有行。
|
|
49樓 巨大八爪鱼
2015-5-30 22:31
以後要排查sql的錯誤直接用errorInfo,不要再把SQL語句複製到PMA里執行了。而且也沒有辦法獲得最終的SQL語句。
|
|
51樓 巨大八爪鱼
2015-5-31 08:15
我還是要硬着頭皮看英文版的PHP文檔,雖然閱讀速度比中文慢了很多,但這是一個適應的過程。
|
|
52樓 巨大八爪鱼
2015-5-31 08:16
PDO — The PDO class
PDO::beginTransaction — Initiates a transaction PDO::commit — Commits a transaction PDO::__construct — Creates a PDO instance representing a connection to a database PDO::errorCode — Fetch the SQLSTATE associated with the last operation on the database handle PDO::errorInfo — Fetch extended error information associated with the last operation on the database handle PDO::exec — Execute an SQL statement and return the number of affected rows PDO::getAttribute — Retrieve a database connection attribute PDO::getAvailableDrivers — Return an array of available PDO drivers PDO::inTransaction — Checks if inside a transaction PDO::lastInsertId — Returns the ID of the last inserted row or sequence value PDO::prepare — Prepares a statement for execution and returns a statement object PDO::query — Executes an SQL statement, returning a result set as a PDOStatement object PDO::quote — Quotes a string for use in a query. PDO::rollBack — Rolls back a transaction PDO::setAttribute — Set an attribute PDOStatement — The PDOStatement class
PDOStatement::bindColumn — Bind a column to a PHP variable PDOStatement::bindParam — Binds a parameter to the specified variable name PDOStatement::bindValue — Binds a value to a parameter PDOStatement::closeCursor — Closes the cursor, enabling the statement to be executed again. PDOStatement::columnCount — Returns the number of columns in the result set PDOStatement::debugDumpParams — Dump an SQL prepared command PDOStatement::errorCode — Fetch the SQLSTATE associated with the last operation on the statement handle PDOStatement::errorInfo — Fetch extended error information associated with the last operation on the statement handle PDOStatement::execute — Executes a prepared statement PDOStatement::fetch — Fetches the next row from a result set PDOStatement::fetchAll — Returns an array containing all of the result set rows PDOStatement::fetchColumn — Returns a single column from the next row of a result set PDOStatement::fetchObject — Fetches the next row and returns it as an object. PDOStatement::getAttribute — Retrieve a statement attribute PDOStatement::getColumnMeta — Returns metadata for a column in a result set PDOStatement::nextRowset — Advances to the next rowset in a multi-rowset statement handle PDOStatement::rowCount — Returns the number of rows affected by the last SQL statement PDOStatement::setAttribute — Set a statement attribute PDOStatement::setFetchMode — Set the default fetch mode for this statement
|
|
53樓 巨大八爪鱼
2015-5-31 08:56
exec的用法: $sql = "INSERT INTO `timetest` VALUES (null, NOW())"; $num = $dbh->exec($sql); echo "影響了{$num}行。";
輸出:影響了1行。
|