1+X认证Web前端开发中级模拟题

一、单选题1、在PHP的str_仕place(123)函数中,1,2,3所代表的含义是(D )A:"取代字符串","被取代字符串","来源字符串"B:"来源字符串","被取代字符串","取代字符串"C

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