This article mainly introduces a summary of the method of removing duplicate values from a two-dimensional array in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
The specific code is as follows:
Method one:
//二维数组去掉重复值 function array_unique_fb($array2D){ foreach ($array2D as $v){ $v=join(',',$v); //降维,也可以用implode,将一维数组转换为用逗号连接的字符串 $temp[]=$v; } $temp=array_unique($temp); //去掉重复的字符串,也就是重复的一维数组 foreach ($temp as $k => $v){ $temp[$k]=explode(',',$v); //再将拆开的数组重新组装 } return $temp; }
Method two:
//二维数组去掉重复值,并保留键值 function array_unique_fb($array2D){ foreach ($array2D as $k=>$v){ $v=join(',',$v); //降维,也可以用implode,将一维数组转换为用逗号连接的字符串 $temp[$k]=$v; } $temp=array_unique($temp); //去掉重复的字符串,也就是重复的一维数组 foreach ($temp as $k => $v){ $array=explode(',',$v); //再将拆开的数组重新组装 //下面的索引根据自己的情况进行修改即可 $temp2[$k]['id'] =$array[0]; $temp2[$k]['title'] =$array[1]; $temp2[$k]['keywords'] =$array[2]; $temp2[$k]['content'] =$array[3]; } return $temp2; }
Two PHP methods for removing duplicates from two-dimensional arrays have their own pros and cons. You can choose according to the specific situation.
Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.
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