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- ```php
- <?php
- $add = 1;
- $add2 = 1;
- $callable_one = function ($item) use ($add, $add2) {
- global $add, $add2;
- echo "item_one: $item \n";
- $add++;
- $add2++;
- };
- call_user_func($callable_one, "two");
- echo "resultadd: $add\n";
- echo "resultadd2: $add2\n";
- ```
- 结果
- ```
- item_one: two
- resultadd: 2
- resultadd2: 2
- ```
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