常用算法题目

    $array =[

        ['name'  => 'ab' ,'phone' =>'111' ,'reg' =>'1211'] ,
        ['name'  => 'abc' ,'phone' =>'111' ,'reg' =>'1212'] ,
        ['name'  => 'abd' ,'phone' =>'111' ,'reg' =>'1213'] ,
        ['name'  => 'ab' ,'phone' =>'1112' ,'reg' =>'1214'] ,
        ['name'  => 'ab' ,'phone' =>'111' ,'reg' =>'1216'] ,
        ['name'  => 'ab' ,'phone' =>'1113' ,'reg' =>'1217'] ,
        ['name'  => 'ab' ,'phone' =>'111' ,'reg' =>'1218'] ,


    ] ;


    function array_unique_fb($array2D){
        $temp = [];
        foreach ($array2D as $v) {
            $key = $v['name'].'_'.$v['phone'];
            $temp[$key] =$v['reg'];
        }
        $newarray =[];
        $keys =array_keys($temp);
        for ($i = 0; $i < count($temp); $i++) {
            $a = explode('_',$keys[$i]);
            $newarray[$i]['reg'] = $temp[$keys[$i]];
            $newarray[$i]['name'] = $a[0];
            $newarray[$i]['phone'] = $a[1];
        }
        return $newarray;
    }

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