二维数组序号重置

public static function unique_arr($array2D,$stkeep=false,$ndformat=true){

// 判断是否保留一级数组键 (一级数组键能够为非数字)

if($stkeep) $stArr = array_keys($array2D);

// 判断是否保留二级数组键 (全部二级数组键必须相同)

if($ndformat) $ndArr = array_keys(end($array2D));

//降维,也能够用implode,将一维数组转换为用逗号链接的字符串

foreach ($array2D as $v){

$v = join(",",$v);

$temp[] = $v;

}

//去掉重复的字符串,也就是重复的一维数组

$temp = array_unique($temp);

//再将拆开的数组从新组装

foreach ($temp as $k => $v)

{

if($stkeep) $k = $stArr[$k];

if($ndformat)

{

$tempArr = explode(",",$v);

foreach($tempArr as $ndkey => $ndval) $output[$k][$ndArr[$ndkey]] = $ndval;

}

else $output[$k] = explode(",",$v);

}

return $output;

}