require_once/include_once 与 require/include
2010-10-15 16:13
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1、在php中使用require_once/include_once虽然方便,但是代价昂贵,据测试数据来看,require_once比require慢3-4倍,因为程序要检验是否加载,所以在php开发中,我们应该尽量使用require/include。
2、上述的__autoload函数除了自动加载功能外还有让文件仅加载一次
的功能
2、上述的__autoload函数除了自动加载功能外还有让文件仅加载一次
的功能
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