Php - 名为List的类的静态函数

Question

I have a class named List, this class has a static method. When I call:

List::method();

The following error occurs:

syntax error, unexpected '::' (T_PAAMAYIM_NEKUDOTAYIM), expecting '('

Does php think I want to call the native function list()? Do I have to rename the class?

Answer 1

Yes and no. list is not a function, but a language construct . As such it's a 'reserved word', meaning it will be treated differently by the tokenizer during compilation.

The compiler expects the list token to be followed as in the language construct, so with a ( as it reports. Instead you're feeding it the scope operator, meaning it gets confused. Easiest solution is to rename your class (it's overly generic anyway) or to prevent namespace conflicts, either by putting the class List in your own namespace, or by explicitly referencing the global namespace:

\List::method();

This should work as well from PHP 5.3 upwards - it tells the compiler to look into the global namespace, where it automatically expects a class name after the backslash.

Answer 2

Yes, PHP tries to call the native function
T_PAAMAYIM_NEKUDOTAYIM means unexpected double colon, so when you rename the class everything should be allright