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php写时复制的特性该怎么理解?

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WBOYOriginal
2016-06-06 20:38:32893browse

为什么一个变量赋值为1消耗的内存和另外一个变量也赋值为1消耗的内存空间不一样呢?

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为什么一个变量赋值为1消耗的内存和另外一个变量也赋值为1消耗的内存空间不一样呢?

分別賦值 primitive value 不涉及到寫時複製吧。。。

<code>$foo = 1;
$bar = $foo;
</code>

這樣纔會涉及到寫時複製

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