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问题描述
在手册中有create_function函数，您可以将结果从该函数传递给array_map，我认为这是拥有类似匿名函数和闭包之类的唯一方法，但是后来我发现我可以放功能类似于javascript
In manual there is create_function function and you can pass result from that function to array_map, I thought that that is the only way to have something like anonymous functions and closures, but then I found that I can just put function like in javascript
array_map(function($a) {
return $a + 1;
}, array(1, 2, 3, 4, 5));
我可以在哪个版本的php中执行此操作?这总是在那里吗?
In which version of php I can do this? Was this always there?
推荐答案
在PHP中添加了闭包(匿名函数) 5.3.0
Closures (anonymous functions) were added in PHP 5.3.0
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