php將多個值的數組去除重復元素

array_unique(array) 只能處理value只有單個的數組。

去除有多個value數組，可以使用如下函數實現：

function more_array_unique($arr=array()){  
    foreach($arr[0] as $k => $v){  
        $arr_inner_key[]= $k;   //先把二維數組中的內層數組的鍵值記錄在在一維數組中  
    }  
    foreach ($arr as $k => $v){  
        $v =join(",",$v);    //降維 用implode()也行  
        $temp[$k] =$v;      //保留原來的鍵值 $temp[]即為不保留原來鍵值  
    }  
    $temp =array_unique($temp);    //去重：去掉重復的字符串  
    foreach ($temp as $k => $v){  
        $a = explode(",",$v);   //拆分后的重組 如：Array( [0] => james [1] => 30 )  
        $arr_after[$k]= array_combine($arr_inner_key,$a);  //將原來的鍵與值重新合並  
    }  
    return $arr_after;  
}  

 

有如下數組：

 $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,  
                   ), 
           ); 

調用函數后顯示：

 

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
        )

)

測試Demo如下：

<?php
 $arr = array(  
          '0'=>array(  
                   'name'=>'james',  
                   'age'=>30,  
                   ),  
          '1'=>array(  
                   'name'=>'susu',  
                   'age'=>26,  
                   ),  
           '2'=>array(  
                   'name'=>'james',  
                   'age'=>30,  
                   ),  
           'new'=>array(  
                   'name'=>'kube',  
                   'age'=>37,  
                   ),  
           'list'=>array(  
                   'name'=>'kube',  
                   'age'=>27,  
                   ),  
           '435'=>array(  
                   'name'=>'susu',  
                   'age'=>26,  
                   ),
            '33'=>array(  
                   'name'=>'james',  
                   'age'=>30,  
                   ), 
           );  
printf("原來的數組:<br><pre>");   //輸出原來的數組  
print_r($arr);  
echo "</pre><br/>";   



function more_array_unique($arr=array()){  
    foreach($arr[0] as $k => $v){  
        $arr_inner_key[]= $k;   //先把二維數組中的內層數組的鍵值記錄在在一維數組中  
    }  
    foreach ($arr as $k => $v){  
        $v =join(",",$v);    //降維 用implode()也行  
        $temp[$k] =$v;      //保留原來的鍵值 $temp[]即為不保留原來鍵值  
    }  
    $temp =array_unique($temp);    //去重：去掉重復的字符串  
    foreach ($temp as $k => $v){  
        $a = explode(",",$v);   //拆分后的重組 如：Array( [0] => james [1] => 30 )  
        $arr_after[$k]= array_combine($arr_inner_key,$a);  //將原來的鍵與值重新合並  
    }  
    return $arr_after;  
}  



    $arr_new = more_array_unique($arr);  //調用去重函數  
    printf("去除重復元素后的數組:<br>");  
    
    echo '<pre>';
    print_r($arr_new);  
    echo "</pre><br/>";  
?>