PHP解析错误:语法错误，意外的T_OBJECT_OPERATOR [英] PHP Parse error: syntax error, unexpected T_OBJECT_OPERATOR

问题描述

调试代码时出现此错误:

I got this error when debugging my code:

PHP解析错误:语法错误，第72行的order.php中出现意外的T_OBJECT_OPERATOR

PHP Parse error: syntax error, unexpected T_OBJECT_OPERATOR in order.php on line 72

这是代码段(从第72行开始):

Here is a snippet of the code (starting on line 72):

$purchaseOrder = new PurchaseOrderFactory->instance();
$arrOrderDetails = $purchaseOrder->load($customerName);

推荐答案

不幸的是，无法在PHP 5.4之前的刚用new创建的对象上调用方法.

Unfortunately, it is not possible to call a method on an object just created with new before PHP 5.4.

在PHP 5.4和更高版本中，可以使用以下内容:

In PHP 5.4 and later, the following can be used:

$purchaseOrder = (new PurchaseOrderFactory)->instance();

请注意必须有一对括号.

Note the mandatory pair of parenthesis.

在以前的版本中，您必须在变量上调用方法:

In previous versions, you have to call the method on a variable:

$purchaseFactory = new PurchaseOrderFactory;
$purchaseOrder = $purchaseFactory->instance();

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