在试图将本网站放在一起时,编写函数以允许版主添加产品时遇到了问题。我附上了代码和我收到的错误消息。
功能(从产品model.php):
当传递给SQL语句时,PHP变量未定义
function insPro(){
// Create a connection object using the acme connection function
$db = acmeConnect();
// The SQL statement
$sql = 'INSERT INTO inventory (invName, invDescription, invImage, invThumbnail, invPrice, invStock, invSize, invWeight, invLocation, categoryId, invVendor, invStyle)
VALUES (:invName, :invDescription, :invImage, :invThumbnail, :invPrice, :invStock, :invSize, :invWeight, :invLocation, :categoryId, :invVendor, :invStyle)';
// Create the prepared statement using the acme connection
$stmt = $db->prepare($sql);
$stmt->bindValue(':invName', $invName, PDO::PARAM_STR);
$stmt->bindValue(':invDescription', $invDescription, PDO::PARAM_STR);
$stmt->bindValue(':invImage', $invImage, PDO::PARAM_STR);
$stmt->bindValue(':invThumbnail', $invThumbnail, PDO::PARAM_STR);
$stmt->bindValue(':invPrice', $invPrice, PDO::PARAM_STR);
$stmt->bindValue(':invStock', $invStock, PDO::PARAM_STR);
$stmt->bindValue(':invSize', $invSize, PDO::PARAM_STR);
$stmt->bindValue(':invWeight', $invWeight, PDO::PARAM_STR);
$stmt->bindValue(':invLocation', $invLocation, PDO::PARAM_STR);
$stmt->bindValue(':categoryId', $categoryId, PDO::PARAM_STR);
$stmt->bindValue(':invVendor', $invVendor, PDO::PARAM_STR);
$stmt->bindValue(':invStyle', $invStyle, PDO::PARAM_STR);
// Insert the data
$stmt->execute();
// Ask how many rows changed as a result of our insert
$rowsChanged = $stmt->rowCount();
// Close the database interaction
$stmt->closeCursor();
// Return the indication of success (rows changed)
return $rowsChanged;
错误信息:
Notice: Undefined variable: invName in C:\CIT336\htdocs\acme\model\product-model.php on line 37
Notice: Undefined variable: invDescription in C:\CIT336\htdocs\acme\model\product-model.php on line 38
Notice: Undefined variable: invImage in C:\CIT336\htdocs\acme\model\product-model.php on line 39
Notice: Undefined variable: invThumbnail in C:\CIT336\htdocs\acme\model\product-model.php on line 40
Notice: Undefined variable: invPrice in C:\CIT336\htdocs\acme\model\product-model.php on line 41
Notice: Undefined variable: invStock in C:\CIT336\htdocs\acme\model\product-model.php on line 42
Notice: Undefined variable: invSize in C:\CIT336\htdocs\acme\model\product-model.php on line 43
Notice: Undefined variable: invWeight in C:\CIT336\htdocs\acme\model\product-model.php on line 44
Notice: Undefined variable: invLocation in C:\CIT336\htdocs\acme\model\product-model.php on line 45
Notice: Undefined variable: categoryId in C:\CIT336\htdocs\acme\model\product-model.php on line 46
Notice: Undefined variable: invVendor in C:\CIT336\htdocs\acme\model\product-model.php on line 47
Notice: Undefined variable: invStyle in C:\CIT336\htdocs\acme\model\product-model.php on line 48
Fatal error: Uncaught PDOException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'invName' cannot be null in C:\CIT336\htdocs\acme\model\product-model.php:50 Stack trace: #0 C:\CIT336\htdocs\acme\model\product-model.php(50): PDOStatement->execute() #1 C:\CIT336\htdocs\acme\products\index.php(158): insPro('Baseball', 'A round ball wi...', 'no-image.png', 'no-image.png', '5', '24', '6', '6', 'San Jose', '15', 'Diamond', 'Nylon') #2 {main} thrown in C:\CIT336\htdocs\acme\model\product-model.php on line 50
我不知道为什么变量是未定义因为我在相同的文件中使用相同的语法使用相似的函数,并且工作正常。
我在做什么错了代码?
功能是范围特定的。 – chris85
@ chris85我明白,但功能在范围内 –
函数内部的变量不是。在'insPro'中永远不会定义'$ invName'等。 – chris85