php将多个值的数组去除重复元素

array_unique(array) 只能处理value只有单个的数组。

去除有多个value数组，可以使用如下函数实现：

function more_array_unique($arr=array()){
    foreach($arr[0] as $k => $v){
        $arr_inner_key[]= $k;   //先把二维数组中的内层数组的键值记录在在一维数组中
    }
    foreach ($arr as $k => $v){
        $v =join(",",$v);    //降维 用implode()也行
        $temp[$k] =$v;      //保留原来的键值 $temp[]即为不保留原来键值
    }
    $temp =array_unique($temp);    //去重：去掉重复的字符串
    foreach ($temp as $k => $v){
        $a = explode(",",$v);   //拆分后的重组 如：Array( [0] => james [1] => 30 )
        $arr_after[$k]= array_combine($arr_inner_key,$a);  //将原来的键与值重新合并
    }
    return $arr_after;
}  

有如下数组：

 $arr = array(
          '0'=>array(
                   'name'=>'james',
                   'age'=>30,
                   ),
          '1'=>array(
                   'name'=>'susu',
                   'age'=>26,
                   ),
           '2'=>array(
                   'name'=>'james',
                   'age'=>30,
                   ),
           'new'=>array(
                   'name'=>'kube',
                   'age'=>37,
                   ),
           'list'=>array(
                   'name'=>'kube',
                   'age'=>27,
                   ),
           '435'=>array(
                   'name'=>'susu',
                   'age'=>26,
                   ),
            '33'=>array(
                   'name'=>'james',
                   'age'=>30,
                   ),
           ); 

调用函数后显示：

Array
(
    [0] => Array
        (
            [name] => james
            [age] => 30
        )

    [1] => Array
        (
            [name] => susu
            [age] => 26
        )

    [new] => Array
        (
            [name] => kube
            [age] => 37
        )

    [list] => Array
        (
            [name] => kube
            [age] => 27
        )

)

测试Demo如下：

<?php
 $arr = array(
          '0'=>array(
                   'name'=>'james',
                   'age'=>30,
                   ),
          '1'=>array(
                   'name'=>'susu',
                   'age'=>26,
                   ),
           '2'=>array(
                   'name'=>'james',
                   'age'=>30,
                   ),
           'new'=>array(
                   'name'=>'kube',
                   'age'=>37,
                   ),
           'list'=>array(
                   'name'=>'kube',
                   'age'=>27,
                   ),
           '435'=>array(
                   'name'=>'susu',
                   'age'=>26,
                   ),
            '33'=>array(
                   'name'=>'james',
                   'age'=>30,
                   ),
           );
printf("原来的数组:<br><pre>");   //输出原来的数组
print_r($arr);
echo "</pre><br/>";   

function more_array_unique($arr=array()){
    foreach($arr[0] as $k => $v){
        $arr_inner_key[]= $k;   //先把二维数组中的内层数组的键值记录在在一维数组中
    }
    foreach ($arr as $k => $v){
        $v =join(",",$v);    //降维 用implode()也行
        $temp[$k] =$v;      //保留原来的键值 $temp[]即为不保留原来键值
    }
    $temp =array_unique($temp);    //去重：去掉重复的字符串
    foreach ($temp as $k => $v){
        $a = explode(",",$v);   //拆分后的重组 如：Array( [0] => james [1] => 30 )
        $arr_after[$k]= array_combine($arr_inner_key,$a);  //将原来的键与值重新合并
    }
    return $arr_after;
}  

    $arr_new = more_array_unique($arr);  //调用去重函数
    printf("去除重复元素后的数组:<br>");  

    echo '<pre>';
    print_r($arr_new);
    echo "</pre><br/>";
?>