关于PHP异常：unexpected T_PAAMAYIM_NEKUDOTAYIM
关于PHP错误：unexpected T_PAAMAYIM_NEKUDOTAYIM
PHP解析错误：Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM ，这个错误很少遇到，但是遇到了之后看到这个比较奇怪的字符：T_PAAMAYIM_NEKUDOTAYIM 就比较晕，其实这个标识的是双引号（::），因此含义就是不正确的使用了双引号，解决办法是查找是否在使用::的时候，左侧的表达式不是一个类名。
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