使用get_file_contents（）创建数组

Question

I am trying to upload a CSV file and get it's contents into an array, but I am getting this an error: (Multiples of this error on each line after 10)

Notice: Undefined offset: 1 in C:\xampp\htdocs\amazon\upload_file.php on line 10

Below is a sample of my code:

if ($handle = file_get_contents($_FILES["file"]["tmp_name"])) {

$data = array();

while ($csv = array(file_get_contents($_FILES["file"]["tmp_name"]))) {
    $data = array(
        'order-id' => $csv[0],
        'order-item-id' => $csv[1], //This is line 10.
        'purchase-date' => $csv[2],
        'payments-date' => $csv[3],

Answer 1

file() opens puts each as an array element. fgetcsv() and its family of functions are very useful when dealing with csv files.

Your code array(file_get_contents($_FILES["file"]["tmp_name"])) will only ever have one element because file_get_contents returns a string.

Answer 2

This issue comes if your file has only one line.

I guess you need to do this.

$row = explode(",", $csv[0]);
$data = array(
    'order-id' => $fileArray[0],
    'order-item-id' => $row[1], //This is line 10.
    'purchase-date' => $row[2],
    'payments-date' => $row[3]
);

Also, you can use functions like fgetcsv() to parse your CSV file.