重新分配一个数组释放由它使用的内存？ [英] Reassigning an array frees the memory used by it?

问题描述

我班有一个成员变量数组，物品。我会定期重新分配数组是另一种价值，临时数组，像这样的：

My class has a member variable array, items. Periodically I reassign the array to be the value of another, temporary array, like this:

$temp = array();
$temp[] = new Object();
$temp[] = new Object();
$temp[] = new Object();
... etc.

$this->items = $temp;

所以，我可以有内存泄漏？截至这 - $>温度值重新分配给新的价值，$温度，将所有项目（项目都是对象）最初在$这个 - >温度仍萦绕周围，或者他们会被释放？

So, could I have a memory leak? By reassigning the value of $this->temp to a new value, $temp, would all the items (the items are objects) originally in $this->temp still linger around, or would they be freed?

推荐答案

这不会导致内存泄漏。 $ TEMP和$这个 - >项目是同一个数组只是引用。由于PHP是一种垃圾回收的语言，阵列将被删除（垃圾回收）当有到阵列的更多引用。

This will not cause a memory leak. $temp and $this->items are just references to the same array. Since PHP is a garbage collected language, the array will be deleted (garbage collected) when there are no more references to the array.

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