PHP-array_map是否比foreach快? [英] PHP - Is array_map faster than foreach?

问题描述

就性能而言，哪个是更好的选择?

In terms of performance, which is the better option?

在对象中:

案例1

public function test( $array ) {
    return array_map( array( $this, 'do_something_to_element' ), $array );
}

案例#2

public function test( $array ) {
    $return = array();
    foreach ( $array as $value ) {
        $return[] = do_something_to_element( $value );
    }
    return $return;
}

当然还有其他用途，并且可以填充许多示例.我看到有评论说，在对象中，array_map比foreach循环要慢.

There are other uses of course and many many examples can be populated. I've seen comments that while in an object, array_map is slower than foreach loops.

总的来说，与具有类似需求的foreach循环相比，array_map/array_walk函数的执行速度更快吗?

In general is the array_map/array_walk functions faster to execute than the foreach loops in similar needs?

推荐答案

我相信这可以回答您的问题，并且于2015年1月22日有效

I believe this answers your question and is current as of 2015-01-22

foreach的性能，具有lambda的array_map和具有静态功能的array_map

array_map虽然更优雅，但是在PHP中却很慢.尤其是与闭包一起使用时.

array_map although more elegant is sadly slower in PHP. Particularly if using it with a closure.

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