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php 数组除开重复值

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2016-06-13 12:52:21775browse

php 数组去除重复值



我要把花红线的键值去过  只留下后面的两个键值   应该怎么实现

数组
------解决方案--------------------
$arr=array(38,39,41,38,39,41,42,43);<br />
$c=array_count_values($arr);<br />
function foo($v){<br />
    global $c;<br />
    if($c[$v]==1){<br />
		  return true;<br />
	}<br />
	return false;<br />
}<br />
print_r(array_filter($arr,'foo'));

Array
(
    [6] => 42
    [7] => 43
)
------解决方案--------------------
$ar = array(38, 39, 40, 41, 38, 39, 40, 41, 42, 43);<br />
foreach(array_count_values($ar) as $k=>$v)<br />
  if($v == 1) $res[] = $k;<br />
<br />
print_r($res);
Array ( [0] => 42 [1] => 43 ) 
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