【求助】PHP二维数组 去除特定重复值的问题
原数组:
$arr = array(
array('id' => 1,'name' => 'aaa','uid'=>1),
array('id' => 2,'name' => 'bbb','uid'=>2),
array('id' => 3,'name' => 'ccc','uid'=>3),
array('id' => 4,'name' => 'ddd','uid'=>4),
array('id' => 5,'name' => 'ccc','uid'=>3),
array('id' => 6,'name' => 'bbb','uid'=>2),
array('id' => 7,'name' => 'bbb','uid'=>2),
array('id' => 8,'name' => 'fff','uid'=>6),
array('id' => 9,'name' => 'ccc','uid'=>3),
array('id' => 10,'name' => 'bbb','uid'=>2),
array('id' => 11,'name' => 'ddd','uid'=>4),
array('id' => 12,'name' => 'eee','uid'=>5),
array('id' => 13,'name' => 'fff','uid'=>6),
);
问题描叙:想获取$arr中id为 1,3,5,7,9的值,但是‘name’和‘uid’的值不能有重复。举例:id==3对应的name==ccc,但是id==5对应的 name==ccc,所以不取id为5的这一条,取它的下一条 id=6的值,如果id=6的值,和前面的还有重复,则再取下一条,以此类推。
如果想要取id为1,3,5,7,9的值,则想要的结果是:
$arr_new = array(
array('id' => 1,'name' => 'aaa','uid'=>1),
array('id' => 3,'name' => 'ccc','uid'=>3),
array('id' => 6,'name' => 'bbb','uid'=>2),
array('id' => 8,'name' => 'fff','uid'=>6),
);
PHP
二维数组递归取值
分享到:
------解决方案--------------------这个是算法处理的方式有问题 他会遍历当前已经取的数据 然后如果查到已经有了 则取下一条 -- 这种算法的目的 是用来统计人数的 一个人发多张贴 也只算一个 如果要解决 只要把遍历当前查询的数据部分的代码注释即可
------解决方案--------------------这个意思?
- $arr = array( <br>
- array('id' => 1,'name' => 'aaa','uid'=>1), <br>
- array('id' => 2,'name' => 'bbb','uid'=>2), <br>
- array('id' => 3,'name' => 'ccc','uid'=>3), <br>
- array('id' => 4,'name' => 'ddd','uid'=>4), <br>
- array('id' => 5,'name' => 'ccc','uid'=>3), <br>
- array('id' => 6,'name' => 'bbb','uid'=>2), <br>
- array('id' => 7,'name' => 'bbb','uid'=>2), <br>
- array('id' => 8,'name' => 'fff','uid'=>6), <br>
- array('id' => 9,'name' => 'ccc','uid'=>3), <br>
- array('id' => 10,'name' => 'bbb','uid'=>2), <br>
- array('id' => 11,'name' => 'ddd','uid'=>4), <br>
- array('id' => 12,'name' => 'eee','uid'=>5), <br>
- array('id' => 13,'name' => 'fff','uid'=>6), <br>
- ); <br>
- $id = array(1,3,5,7,9);<br>
- <br>
- foreach($arr as $v) $a[$v['id']] = $v;<br>
- <br>
- $t = array();<br>
- foreach($id as $k) {<br>
- if(! in_array($a[$k]['name'], $t)) {<br>
- $res[] = $a[$k];<br>
- $t[] = $a[$k]['name'];<br>
- }else {<br>
- for($i=$k+1; $i<count($a); $i++)<br="">
- if(! in_array($a[$i]['name'], $t)) {<br>
- $res[] = $a[$i];<br>
- $t[] = $a[$i]['name'];<br>
- break;<br>
- }<br>
- }<br>
- }<br>
- print_r($res);</count($a);>
Array
(
[0] => Array
(
[id] => 1
[name] => aaa
[uid] => 1
)
[1] => Array
(
[id] => 3
[name] => ccc
[uid] => 3
)
[2] => Array
(
[id] => 6
[name] => bbb
[uid] => 2