Question

这里需要一些关于数组的帮助。我需要比较数据库结果中的数组ID。如果存在于数组中。将根据数组的相应ID

覆盖数据库结果

如果我们有这个数组的示例：

Array(
    [0] => Array(
       [company_id] => 1,
       [new_lat] => 015244,
       [new_long] => 012991
    ),
    [1] => Array(
       [company_id] => 2,
       [new_lat] => 475421,
       [new_long] => 021413
    ),

    [2] => Array(
       [company_id] => 3,
       [new_lat] => 454544,
       [new_long] => 122513
    )
)

我有这个代码来分配值。

for ($i = 0; $i <= $companies_count; $i++) :

$company = $companies[$i];
$company_id = $company['company_id']; //this is the ID from the database result

/********These files are from array but I don't know how to search an ID in the array if existing*********/
//file information from textfile
//$file_id = $addresses_file[$i]['company_id'];
//$file_latitude = $addresses_file[$i]['new_lat'];
//$file_longitude = $addresses_file[$i]['new_long'];

//This is the assigning part. If found in the array use the array information instead of the database information
if($company_id == $file_id){
    //if found, get information from textfile
    $lat = $file_latitude;
    $long = $file_longitude;
    //echo "found";

}else{
    //if not found in then textfile get database info instead
    //echo "not found";
    $lat = $additionals[$company_id]['geo_lat'];
    $long = $additionals[$company_id]['geo_long'];

}

另一个例子假设我们在数据库中有这个：

company_id: 1
new_lat: 454451
new_long: 11211

company_id: 2
new_lat: 232332
new_long: 324343

company_id: 3
new_lat: 34232
new_long: 74874

company_id: 4
new_lat: 34434
new_long: 34344

现在我们的数组中有这个：

company_id: 1
new_lat: 222222
new_long: 11211

company_id: 2
new_lat: 454451
new_long: 11211

所以最终的数组应该是

company_id: 1
new_lat: 222222
new_long: 11211

company_id: 2
new_lat: 454451
new_long: 11211

company_id: 3
new_lat: 34232
new_long: 74874

company_id: 4
new_lat: 34434
new_long: 34344

正如您所见，company_id 1和2被覆盖。我怎么能那样做呢？

Answer 1

好的，我有这个代码。我需要做的就是在主循环中执行另一个循环并使用if语句进行比较：

$addresses_file = unserialize(file_get_contents('addresses.txt'));




                    for ($i = 0; $i <= $companies_count; $i++) :

                        $company = $companies[$i];
                        $company_id = $company['company_id'];

                        //file information from textfile
                        $file_id = $addresses_file[$i]['company_id'];
                        $file_latitude = $addresses_file[$i]['new_lat'];
                        $file_longitude = $addresses_file[$i]['new_long'];

                        foreach($addresses_file as $y){

                            if($company_id == $y['company_id']){

                                $lat = $y['new_lat'];
                                $long = $y['new_long'];

                            }else{

                                $lat = $additionals[$company_id]['geo_lat'];
                                $long = $additionals[$company_id]['geo_long'];

                            }

                        }

使用PHP搜索和比较数组？

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