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phpÖÐµÄ Àà³£Á¿ Class Constants


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http://topic.csdn.net/t/20040927/15/3412922.html
http://www.docin.com/p-23414672.html 
http://www.qqread.com/php/n652282101.html
http://www.51testing.com/?uid-65519-action-viewspace-itemid-142987
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