The difference between const and static in PHP

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Class test{    static $test _var = ten;    Const TEST_CONST = 5;} echo Test:: $test _var;   return 10echo Test::my_const;  Return 5Test:: $test _var =;   echo Test:: $test _var; return 20test::test_const =;  Error

In fact, the concepts are completely different, but sometimes the use may confuse

static variables , followed by the PHP variable naming convention, can be accessed and modified when the class is not instantiated.

Const is a constant meaning, followed by a constant naming convention (which can not be used as a constant name), like define, and define is not allowed to be modified, but different from define The point is that the const variable can be placed in a class to achieve test::test_const access.

The difference between const and static in PHP