Question

我正在尝试为MySQL文件设置导入/导出到MySQL。我有大部分，但我正在尝试验证信息。当我验证时，我不想将任何记录导入MySQL。我目前拥有的代码只会在空字段后才导入任何记录。我通常不会问，但我很难过。

app.use(function * setUserInContext (next) {
  this.user = this.req.user
  yield next
})

Answer 1

好的，让我们看看：

// here you get an array from csv-string
while(($fileop = fgetcsv($handle,1000,",")) !==false){
    // first: use trim function to remove spaces from left and right of a value
    $first = trim($fileop[0]);
    $last = trim($fileop[1]);
    $birthday = trim($fileop[2]);
    $age = trim($fileop[3]);
    $address = trim($fileop[4]);

    // now you have five values.
    // u want to insert them to database only if they are ALL not empty
    // use function empty to check if value is empty
    if (!empty($first) 
        && !empty($last) 
        && !empty($birthday) 
        && !empty($age) 
        && !empty($address) 
    ) {
        $sql = mysqli_query($conn,"INSERT INTO `mytable` (first, last, birthday, age, address) VALUES ('$first','$last','$birthday','$age','$address')");

        // other code here
    }
}

此脚本将插入非空的值。但它仍会忽略空值的行。如果你想检查你的csv的所有行中的所有字段是否都不为空，那么你应该这样做：

// set a special flag
$empty_value_found = false;

while(($fileop = fgetcsv($handle,1000,",")) !==false){
    // first: use trim function to remove spaces from left and right of a value
    $first = trim($fileop[0]);
    $last = trim($fileop[1]);
    $birthday = trim($fileop[2]);
    $age = trim($fileop[3]);
    $address = trim($fileop[4]);

    // now you have five values.
    // if any of them is empty - we should NOT go further and stop our cycle
    if (empty($first) 
        || empty($last) 
        || empty($birthday) 
        || empty($age) 
        || empty($address) 
    ) {
        $empty_value_found = true;
        break; // stop our while-loop
    }
}
// now we check - if there no empty values
if (!$empty_value_found) {
    // we can go through our file again and insert values,
    // code is similar to what you have
}

所以，如果你想检查

CSV导入验证

1 个答案: