在php中，将敏感文字用星号替换通常涉及到字符串的搜索和替换操作。你可以使用PHP的内置函数str_replace()来实现这个功能。下面是一个基本的示例，展示如何将特定的敏感词替换为星号：
If one could put an array of pointers to child structs inside unsafe structs in C# like one could in C, constructing complex data structures without the overhead of having one object per node would be
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