如何解决PHP Strict错误“从空值创建默认对象"? [英] How do I fix the PHP Strict error "Creating default object from empty value"?

问题描述

我有以下PHP5代码:

I have the following PHP5 code:

$request = NULL;
$request->{"header"}->{"sessionid"}        =  $_SESSION['testSession'];
$request->{"header"}->{"type"}             =  "request";

第2行和第3行产生以下错误:

Lines 2 and 3 are producing the following error:

PHP严格标准:从空值创建默认对象

PHP Strict standards: Creating default object from empty value

如何解决此错误?

推荐答案

Null不是对象，因此无法为其分配值.从您的操作看来，您需要一个关联数组.如果您对使用对象一无所知，则可以使用 stdClass

Null isn't an object, so you can't assign values to it. From what you are doing it looks like you need an associative array. If you are dead set on using objects, you could use the stdClass

//using arrays
$request = array();
$request["header"]["sessionid"]        =  $_SESSION['testSession'];
$request["header"]["type"]             =  "request";

//using stdClass
$request = new stdClass();
$request->header = new stdClass();
$request->header->sessionid        =  $_SESSION['testSession'];
$request->header->type             =  "request";

我建议使用数组，因为它是一种更整洁的语法，具有(可能)相同的基础实现.

I would recommend using arrays, as it is a neater syntax with (probably) the same underlying implementation.

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