Function to remove duplicate values ​​from array_PHP tutorial

php’s function to remove duplicate values ​​from an array can also be understood as removing duplicate values ​​from an array.

/**
* 给数组排重
* 与array_unique函数的区别：它要求val是字符串，而这个可以是数组/对象
*
* @param $arr 要排重的数组
* @param $reserveKey 是否保留原来的Key
* @return array
*/
function m_ArrayUnique($arr,$reserveKey=false){
	if(is_array($arr) && !empty($arr)){
		foreach($arr as $key=>$value){
			$tmpArr[$key]=serialize($value).'';
		}
		$tmpArr=array_unique($tmpArr);
		$arr=array();
		foreach($tmpArr as $key=>$value){
			if($reserveKey){
				$arr[$key]=unserialize($value);
			}else{
				$arr[]=unserialize($value);
			}
		}
	}
	return $arr;
}

For how to remove duplicate values ​​from a two-dimensional array, you can refer to: Summary of methods for removing duplicate values ​​from a two-dimensional array in PHP

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