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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