creating a CSV file from MySQL Table data in PHP - php

Question

I have this code in PHP:
// output headers so that the file is downloaded rather than displayed
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=calls.csv');
// create a file pointer connected to the output stream
$output = fopen($_SERVER["DOCUMENT_ROOT"].'/file_dump/price_tariffs/calls.csv', 'w');
// output the column headings
fputcsv($output, array('Column 1', 'Column 2'));
// loop over the rows, outputting them
$sql="SELECT * from call_costs where sequence < '50' ";
$rs=mysql_query($sql,$conn);
while($result = mysql_fetch_array($rs)) {
fputcsv($output, $result["number"]);
}
its creating the file name calls.csv in the price_tariffs directory but its only adding the column 1 and column 2 and not the data from the while loop
i have check the loop and echoed data inside the loop which displays fine

Answer 1

fputcsv takes the second parameter as an array(), "and you already used fputcsv outside of the loop passing the second param as an array"[*] with two values inside.
Try to do the same inside your loop:
fputcsv($output, array($result["number"], $result["somethingelse"]));
[*]: edited, added enquoted sentence after clarifying in the comments below.

Answer 2

Select only the columns that you want:
$sql = "SELECT column1, column2 FROM call_costs WHERE sequence < '50'";
Then use mysql_fetch_assoc() to fetch each row as an associative array, and output that:
$rs=mysql_query($sql,$conn);
while($row = mysql_fetch_assoc($rs)) {
fputcsv($output, $row);
}
fputcsv()'s second argument is supposed to be an array of the values that should be put into fields in the CSV file.

Answer 3

since you're sending the data to the client directly, you should echo it instead of saving it to a file :) Open the php://output instead:
Try this (from powtacs answer:
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=calls.csv');
// create a file pointer connected to the output stream
$output = fopen('php://output', 'w');
// output the column headings
fputcsv($output, array('Column 1', 'Column 2'));
// loop over the rows, outputting them
$sql="SELECT * from call_costs where sequence < '50' ";
$rs=mysql_query($sql,$conn);
while($result = mysql_fetch_assoc($rs)) {
fputcsv($output, $result);
}
Also please note that mysql is depreciated, and you should use mysqli or PDO instead

Answer 4

Checkout the mysql_fetch_array in the php manual, so, we can say:
...
while($result = mysql_fetch_array($rs,MYSQL_NUM)) {
fputcsv($output, $result);
}
Just add the second optional parameter MYSQL_NUM to return numerical array and supply all of it as a parameter in fputcsv. By this way you will get all the raw's fields data in your csv file.