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章节标题修改
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章节标题修改
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wuleying committed Aug 19, 2014
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# 3.2 内存管理
# 3.2 引用计数

对于PHP这种需要同时处理多个请求的程序来说,申请和释放内存的时候应该慎之又慎,一不小心便会酿成大错。另一方面,除了要安全的申请和释放内存外,还应该做到内存的最小化使用,因为它可能要处理每秒钟数以千计的请求,为了提高系统整体的性能,每一次操作都应该只使用最少的内存,对于不必要的相同数据的复制则应该能免则免。我们来看下面这段PHP代码:
````php
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