php - 获取文件的详细信息然后插入到数据库

Question

我有一个 .txt 文件，其中包含所有国家/地区的详细信息，格式如下:

Country,City,AccentCity,Region,Population,Latitude,Longitude
ad,aixas,Aixàs,06,,42.4833333,1.4666667
ad,aixirivali,Aixirivali,06,,42.4666667,1.5
ad,aixirivall,Aixirivall,06,,42.4666667,1.5
ad,aixirvall,Aixirvall,06,,42.4666667,1.5
ad,aixovall,Aixovall,06,,42.4666667,1.4833333
ad,andorra,Andorra,07,,42.5,1.5166667
ad,andorra la vella,Andorra la Vella,07,20430,42.5,1.5166667
ad,andorra-vieille,Andorra-Vieille,07,,42.5,1.5166667
ad,andorre,Andorre,07,,42.5,1.5166667
ad,andorre-la-vieille,Andorre-la-Vieille,07,,42.5,1.5166667
ad,andorre-vieille,Andorre-Vieille,07,,42.5,1.5166667
ad,ansalonga,Ansalonga,04,,42.5666667,1.5166667

我必须将这些数据插入到 3 个表中，例如城市、州和国家/地区，而不要重复。

有什么方法可以从 .txt 文件中读取数据并将其插入数据库？

如何获取州和城市数据库？

Answer 1

以 CSV 格式读取文件，然后插入:

if (($handle = fopen("cities.txt", "r")) !== FALSE) {
    while (($data = fgetcsv($handle)) !== FALSE) {
        // Craft your SQL insert statement such as:
        $sql = "INSERT INTO cities (country, city, accent_city, etc.) VALUES ('{$data[0]}','{$data[1]}','{$data[2]}', etc.)";
        // Use the appropriate backend functions depending on your DB, mysql, postgres, etc.
    }
}