$sort = ['advertiser_id','advertiser_name','raw','valid_clicks_count','invalid_clicks_count','conversions_count','revenue'];

$arr = Array(
    [0] => Array
        (
            [advertiser_id] => 1
            [valid_clicks_count] => 4
            [conversions_count] => 2
            [revenue] => 0.40
            [invalid_clicks_count] => 3
            [raw] => 7
            [advertiser_name] => Ad1
        )
)

以上二维数组中的一维数组的键根据$sort的值进行排序
现有两种方式：

方式一：

创建一个新的数组，循环赋值,再注销掉原来的数组

$newArr = [];
foreach ($arr as $key => $val){
                    $newArr[$key]['advertiser_id'] = $val['advertiser_id'];
                    $newArr[$key]['advertiser_name'] = $val['advertiser_name'];
                    $newArr[$key]['raw'] = $val['raw'];
                    $newArr[$key]['valid_clicks_count'] = $val['valid_clicks_count'];
                    $newArr[$key]['invalid_clicks_count'] = $val['invalid_clicks_count'];
                    $newArr[$key]['conversions_count'] = $val['conversions_count'];
                    $newArr[$key]['revenue'] = $val['revenue'];
                }
                unset($exportData);

效果符合期望：

Array
(
    [0] => Array
        (
            [advertiser_id] => 1
            [advertiser_name] => Ad1
            [raw] => 7
            [valid_clicks_count] => 4
            [invalid_clicks_count] => 3
            [conversions_count] => 2
            [revenue] => 0.40
        )
)

测试运行时间和空间的数据

开始内存：377704Array
(
    [0] => Array
        (
            [advertiser_id] => 1
            [advertiser_name] => Ad1
            [raw] => 7
            [valid_clicks_count] => 4
            [invalid_clicks_count] => 3
            [conversions_count] => 2
            [revenue] => 0.40
        )

)
<br />[页面执行时间：3.9815902709961E-5 ]秒<br />运行后内存：378800回到正常内存：378800

方式二：适用php的内置函数 array_flip,array_replace

$sort = ['advertiser_id','advertiser_name','raw','valid_clicks_count','invalid_clicks_count','conversions_count','revenue'];
foreach ($data as &$val){
    $val = (array_replace(array_flip($sort), $val));
}

效果符合期望值

开始内存：376088Array
(
    [0] => Array
        (
            [advertiser_id] => 1
            [advertiser_name] => Ad1
            [raw] => 7
            [valid_clicks_count] => 4
            [invalid_clicks_count] => 3
            [conversions_count] => 2
            [revenue] => 0.40
        )

)
<br />[页面执行时间：2.1934509277344E-5 ]秒<br />运行后内存：376728回到正常内存：376728

经过多次测试，两者运行平均时间相差不大，可忽略，运行内存消耗方式一大于方式二，推荐用方式二来处理。

PS:测试脚本

<?php
echo '开始内存：'.memory_get_usage(), '';

$stime=microtime(true); //获取程序开始执行的时间

$data = '[{"advertiser_id":1,"valid_clicks_count":4,"conversions_count":2,"revenue":"0.40","invalid_clicks_count":3,"raw":7,"advertiser_name":"Ad1"}]';
$data = json_decode($data, true);
//方式一：
$sortExportData = [];
foreach ($data as $key => $val){
    $sortExportData[$key]['advertiser_id'] = $val['advertiser_id'];
    $sortExportData[$key]['advertiser_name'] = $val['advertiser_name'];
    $sortExportData[$key]['raw'] = $val['raw'];
    $sortExportData[$key]['valid_clicks_count'] = $val['valid_clicks_count'];
    $sortExportData[$key]['invalid_clicks_count'] = $val['invalid_clicks_count'];
    $sortExportData[$key]['conversions_count'] = $val['conversions_count'];
    $sortExportData[$key]['revenue'] = $val['revenue'];
}
print_r($sortExportData);
unset($data);

//方式二：
$sort = ['advertiser_id','advertiser_name','raw','valid_clicks_count','invalid_clicks_count','conversions_count','revenue'];
foreach ($data as &$val){
    $val = (array_replace(array_flip($sort), $val));
}
print_R($data);

$etime=microtime(true);//获取程序执行结束的时间
$total=$etime-$stime;   //计算差值
echo "<br />[页面执行时间：{$total} ]秒".'<br />';

echo '运行后内存：'.memory_get_usage(), '';
unset($tmp);
echo '回到正常内存：'.memory_get_usage();