PHP 7 可以使用一个 use 从同一个 namespace 中导入类、函数和常量:
<?php
// Before PHP 7
use com\test\ClassA;
use com\test\ClassB;
use com\test\ClassC as C;
use function com\test\fn_a;
use function com\test\fn_b;
use function com\test\fn_c;
use const com\test\ConstA;
use const com\test\ConstB;
use const com\test\ConstC;
// PHP 7+ code
use com\test\{ClassA, ClassB, ClassC as C};
use function com\test\{fn_a, fn_b, fn_c};
use const com\test\{ConstA, ConstB, ConstC};
?>