Question

我在数据库中有一个表：

Time      Name
11:23     Tom
12:22     Jack

和.txt文件

12:22, Anna

这是我的代码

$connection = mysqli_connect($hostname, $username, $password, $dbname) or die("Error " . mysqli_error($connection));

// open txt file
$fp = fopen($filename,"r");

//parse the csv file row by row
while(($row = fgetcsv($fp,"500",",")) != FALSE)
{
    //insert csv data into mysql table
    $sql = "INSERT INTO project-1 (time, name) VALUES('" . implode("','",$row) . "')";
    if(!mysqli_query($connection, $sql))
    {
        die('Error: ' . mysqli_error($connection));
    }
}

fclose($fp);

//close the db connection
mysqli_close($connection);

如果数据库中的时间值= .txt中的时间值

，我想停止将.txt文件导入数据库

Answer 1

我不知道我是否正确理解你，但我建议你这样做。如果你有其他问题，请告诉我，我会帮助你。

$conn=mysqli_connect('host','username','password','dbname');

$file=fopen('a.txt','r');
if($file){
    while(($line=fgets($file))!==null){
        //read every line in txt and but before inserting into db check the time like this:
        //first parse the time out of the line:
        $time_array=explode(',',$line);
        //now you have an array with to indexes. 0=time, 1=name.
        $query="SELECT * FROM table WHERE time='$time_array[0]'";
        $result=mysqli_query($conn,$query);
        if(mysqli_num_rows($result)==0){
            //code for inserting into db;
        }else{
            //stop inserting code and do fclose() or anything else.
        }
    }
}

在更新mysql表之前检查行是否存在

1 个答案: