Question

这……我甚至不知道这是怎么回事。

// var_dump of items before
object(stdClass)[84]
   public  75  => object(stdClass)[87]

$items = (array) $items; // Casting unserialized stdClass to array
var_dump($items);

//Result of var dump:
array
   75  => 
    object(stdClass)[87]

//Now lets get this item:
var_dump($items[75]); // Error
var_dump($items[ 75 ]); // Error

什么？

谢谢

Answer 1

I think, you are using a debug extension, so the var_dump() output is different then standart library, properties can not be numeric but $obj->{ 75 } is okay. If can you reach to the sub object by $items->{ 75 } yes you have a numeric property. otherwise you can try print_r($items); and see the original output, or check the array after get_object_vars()

    <?php

$items = new stdClass();
$items->{ 75 } = new stdClass();
$items->{ 75 }->{ 85 } = new stdClass();


$items = (array) $items; // Casting unserialized stdClass to array
$items_array = get_object_vars($items); // getting object vars as an array.

var_dump($items["75"]); // Error
var_dump($items[ 75 ]); // Error
var_dump($items_array[ 75 ]); // Works

PHP问题：#45959

阅读铸造块报价：http://www.php.net/manual/en/language.types.array.php#language.types.array.casting一

Answer 2

转换为数组的工作方式不是这样的。

请查看此处：get_object_vars（）与强制转换为数组

此处：http://www.php.net/manual/en/language.types.array.php#language.types.array.casting一

Blockquote "If an object is converted to an array, the result is an array whose elements are the object s properties. The keys are the member variable names, with a few notable exceptions: integer properties are unaccessible; private variables have the class name prepended to the variable name; protected variables have a * prepended to the variable name. These prepended values have null bytes on either side.

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