删除数组中连续出现的重复项 [英] Removing successive duplicate occurrences in an array

问题描述

有什么办法可以从下面的数组中删除连续的重复项，而只保留第一个?

Is there any way that I can remove the successive duplicates from the array below while only keeping the first one?

该数组如下所示:

$a=array("1"=>"go","2"=>"stop","3"=>"stop","4"=>"stop","5"=>"stop","6"=>"go","7"=>"go","8"=>"stop");

我想要的是一个包含以下内容的数组:

What I want is to have an array that contains:

$a=array("1"=>"go","2"=>"stop","3"=>"go","7"=>"stop");

推荐答案

您可以执行以下操作:

if(current($a) !== $new_val)
    $a[] = $new_val;

假设您没有在两个数组之间进行操作，则可以使用 current()，这比每次对它进行计数以检查 count($ a)-1

Assuming you're not manipulating that array in between you can use current() it's more efficient than counting it each time to check the value at count($a)-1

这篇关于删除数组中连续出现的重复项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！