A summary of PHP methods to remove duplicate values from a two-dimensional array, the specific code is as follows:
Method 1:
//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 $temp; }
Method 2:
//二维数组去掉重复值,并保留键值 function array_unique_fb($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, each has its own advantages and disadvantages. You can choose according to the specific situation.