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php 数组除开重复值

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Release: 2016-06-13 11:16:40
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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'));
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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);
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Array ( [0] => 42 [1] => 43 ) 
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