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这两段在服务器施行的效率差别大不大？
- WBOYOriginal
- 2016-06-13 10:59:11752browse
这两段在服务器执行的效率差别大不大？？？？
$a=3;
$b=$a-1;
$c=$b*10;
$d=$c+3;
===================我是分割线==========================
$a=3;
$d=($a-1)*10-3;
===================我是分割线==========================
只要求效率。。。哪个效率高一点。。。差别大不大？
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