I'm having a problem writing the results of a MySQL query to a file using php. There are definitely results from the search, and the file is created, but when you open the file it's empty. I think it's something to do with how I'm writing to the file, but I'm not sure.
$result = mysql_query($compsel);
if(!result) die("unable to process query: " . mysql_error());
$fp = fopen('results.csv','w');
mysql_data_seek($result,0); //set data pointer to 0
$rw = mysql_fetch_array($result, MYSQL_ASSOC);
print_r($rw);
foreach ($rw as $fields){
fputcsv($fp, $fields);
}
fclose($fp);
Thanks in advance!
Here's an example:
// output headers so that the file is downloaded rather than displayed
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=data.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', 'Column 3'));
// fetch the data
mysql_connect('localhost', 'username', 'password');
mysql_select_db('database');
$rows = mysql_query('SELECT field1,field2,field3 FROM table');
// loop over the rows, outputting them
while ($row = mysql_fetch_assoc($rows)) fputcsv($output, $row);
You can modify it to suit your needs.
Source: http://code.stephenmorley.org/php/creating-downloadable-csv-files/
Related
I am using the below for csv export but i want to export as a pipe delimeted output text file format.
My code generates a txt file using PHP's fputcsv function.
For the delimiter, I am trying to use '|'.
this mycode:
function to_CSV($table) {
$file_csv = "file_csv.csv";
$fp = fopen('php://output', 'w');
$query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA='htmltable' AND TABLE_NAME='$table'";
$result = mysqli_query(db_connect(),$query);
while ($row = mysqli_fetch_row($result)) {
$header[] = $row[0];
}
header('Content-type: application/csv');
header('Content-Disposition: attachment; filename='.$file_csv);
fputcsv($fp, $header);
$query ="SELECT * from $table";
$result = mysqli_query(db_connect(),$query);
while($row = mysqli_fetch_row($result)) {
fputcsv($fp, $row);
}
exit;
}
fclose($fp);
$contents = file_get_contents($file_csv);
$contents = str_replace(",", "|", $contents);
file_put_contents($file_csv, $contents);
How to implementation in codeigniter. help me out please.
thanks a lot.
according to the docs fputcsv format line as CSV and write to file pointer, it has a third parameter which expects a delimiter - take a look at
https://www.php.net/manual/en/function.fputcsv
In your case it means
while($row = mysqli_fetch_row($result)) {
fputcsv($fp, $row, '|');
}
however the main question is - if you use Codeigniter as underlying Framework - why dont you use the model principle and aside of that the provided query builder? - it will make your life much easier.
You can find more informations in their very well written documentation. Take a look at https://codeigniter.com/user_guide/general/models.html?highlight=model
I am using below code to export CSV file using fputcsv in PHP. Code works proper and CSV file generates. All the values/records are coming from database. But I want to add dollar ($) symbol with some of column values.
Code for exporting CSV file.
$filename1 = "All Months.csv";
ob_end_clean();
$fp1 = fopen('php://output', 'w');
ob_start();
header("Content-type: application/vnd.ms-excel");
header('Content-Disposition: attachment; filename='.$filename1);
fputcsv($fp1, array('Month', 'Year', 'Total Production', 'Credit Adjustments', 'Net Production', 'Hygiene Production', 'Collections', 'Account Receivable Total', 'New Patients', 'Break Even Points', 'Net Income', 'Hygiene %'));
$query = $db->query("SELECT Month, Year, Total_Production, Credit_Adjustments, Net_Production, Hygiene_Production, Collections, AC_Receivable_Total, New_Patients, Break_Even_Points, Net_Income, Hygiene FROM clientsdata WHERE Client_Id = '".$userID."'");
while($row = $query->fetch(PDO::FETCH_ASSOC)) {
fputcsv($fp1, $row);
}
exit();
Snapshot of exporting file -
If you want just to add $ sign you can do it this way:
while($row = $query->fetch(PDO::FETCH_ASSOC)) {
$row['the_field_you_want'] = '$'.$row['the_field_you_want']
fputcsv($fp1, $row);
}
While using select query itself you can concat $ symbol. Like below
$query = $db->query("SELECT concat('$',Net_Income) as Net_Income FROM clientsdata WHERE Client_Id = '".$userID."'");
while($row = $query->fetch(PDO::FETCH_ASSOC)) {
fputcsv($fp1, $row);
}
I have this piece of PHP code that's intended to retrieve data from a mySQL database, and export it to a CSV file that has to be automatically downloaded after it was created.
$connection = mysqli_connect($host, $username, $password, $dbname) or die("Connection Error " . mysqli_error($connection));
// fetch mysql table rows
$sql = "select * from users";
$result = mysqli_query($connection, $sql) or die("Selection Error " . mysqli_error($connection));
$fp = fopen('users.csv', 'w');
while($row = mysqli_fetch_assoc($result)) {
fputcsv($fp, $row);
}
fclose($fp);
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="users.csv"');
mysqli_close($connection);
The problem here is that it:
Retrieves the data.
Retrieves the CSV file on the server in the same directory of the export.php file with the data on it.
Downloads the file with the same name BUT it's EMPTY
Thanks.
You're writing it to a file called users.csv, but the file you are forcing the user to download is the output of the page.
As long as your query is correct, once the PHP script has run, there should be a file called users.csv in the same directory as the PHP file that contains the correct data.
You need to output the data to the browser for it to be attributed to the file you're downloading.
Try this:
//Connect to database
$connection = mysqli_connect($host, $username, $password, $dbname) or die("Connection Error " . mysqli_error($connection));
//Fetch mysql table rows
$sql = "select * from users";
$result = mysqli_query($connection, $sql) or die("Selection Error " . mysqli_error($connection));
//Close connection
mysqli_close($connection);
//Set $output
$output = "";
//Set header values
$headers = array("Header 1", "Header 2", "Header 3");
//Insert header values to $output
foreach($headers as $h){
$output .= fieldCheck($h) . ",";
}
$output = rtrim($output, ","). "\n";
//Iterate through results
while($row = mysqli_fetch_assoc($result)) {
foreach($row as $cell){
//Comma-separate each value
$output .= fieldCheck($cell).",";
}
//Remove last comma of each line and add newline
$output = rtrim($output, ",") . "\n";
}
//Set headers
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="users.csv"');
//Output
echo $output;
exit;
//Function in case of comma in field
function fieldCheck($string){
if(strpos($string, ",") !== false){
$string = '"'.$string.'"';
}
return $string;
}
I have seen this question come up quite a few times and here the user is sending the data to "users.csv" as shown below:
$fp = fopen('users.csv', 'w');
The issue is that unless the file "users.csv" is already created there is nothing to write the data to, so the CSV is blank. The "fopen" does not create the file it only opens an existing file and the "w" directive then instructs "fputcsv" to put it into the file "users.csv" which may not exist and if the file does exist it writes over the existing file.
Here is an explainer PHP script that will send the output (CSV) to a filename of your choice for downloading:
//Connect to database
$connection = mysqli_connect($host, $username, $password, $dbname) or die("Connection Error " . mysqli_error($connection));
//Get the data
//The order and number of elements must match the header below or the data
//will appear in the wrong columns.
$sql = "SELECT FirstName,LastName,Address,City,State,Zip FROM users";
$result = mysqli_query($connection, $sql) or die("Selection Error " . mysqli_error($connection));
//Close connection
mysqli_close($connection);
//Name of the file you want the user to download can be any name but
//use the .CSV file extension so it will be recognized
//as a CSV when downloaded.
$NameOfCSVFileToDownload = "MyCSVFile.csv";
//set headers tells the page what to do
header("Content-Type: application/csv; charset=utf-8");
header("Content-Disposition: attachment;filename=\"$NameOfCSVFileToDownload\"");
//Where to send the data -
//there are several option but sending it to output will insert
//the data into "$NameOfCSVFileToDownload" when complete, your output.
//Output is a way to access I/O streams
$output = fopen("php://output", 'w');
//Add the header or 1st row for your data
//-notice we are sending it to "$output" you can add any names you want
//for this header row but make sure that the number of columns in the header
//matches the number of columns you are retrieving from the database or they
//will not line up when you open up the CSV and things will look scrambled.
fputcsv($output, array('FirstName','LastName','Address','City','State','Zip'));
//Loop through the data and insert the data into "$output"
while($rows = $result->fetch_assoc()){
fputcsv($output, $rows);
}
//Close the "$output" file to complete the write.
fclose($output);
That's all, call the page and it will prompt to open or download the CSV that contains data. If it is still blank make sure your SQL statement is actually pulling data.
You can also review the PHP manual on streams to better understand.
PHP Manual
Combining a few ideas mentioned in the comments:
Output directly to stdout (rather than a users.csv file). This prevents concurrent processes from clashing with the same output file. No need to buffer temporary results in a variable, either.
Use fputcsv()'s 3rd argument to specify ';' as the field separator. No need to rewrite special code for that.
Use array_map() and a custom filter to add quotes around all the fields.
// Helper function to surround a string with double quotes
function pad_with_quotes($s) {
return '"' . $s . '"';
}
// Helper function to output a row to $fp:
function output_row($fp, $row) {
// Separate fields with ';':
fputcsv($fp, array_map('pad_with_quotes', $row), ';');
}
// Send HTTP headers
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="users.csv"');
// Open a pointer to stdout:
$fp = fopen('php://output', 'w'); // TO DO: check for fopen() failure
// Output headers (padded with quotes):
output_row($fp, ['foo', 'bar']); // TO DO: change headers
// DB connection/query goes here; omitted for brevity
// Loop through DB results:
while($row = mysqli_fetch_assoc($result)) {
// Output a row of results:
output_row($fp, row);
}
On my local machine it is working fine. but on server it is printing the output on the same page instead of creating of a CSV file. can anyone help
// output headers so that the file is downloaded rather than displayed
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=memberList.csv');
ob_end_clean();
// create a file pointer connected to the output stream
$output = fopen('php://output', 'w');
// output the column headings
fputcsv($output, array('First Name', 'Last Nameenter code here', 'Street Name', 'City', 'State', 'Zip Code'));
// fetch the data
$csvQry = "SELECT * from tabel where num=1";
if ($_POST['stateList']!='all'){
$csvQry = "SELECT * from table";
}
$csvRows = mysqli_query($db,$csvQry);
// loop over the rows, outputting them
while ($csvRow = mysqli_fetch_assoc($csvRows)) {
fputcsv($output, $csvRow);
}
fclose($output);
I am trying to make a user able to download a CSV backup of all of their data on my server.
This means i am trying to execute multiple query's and placing the results into a CSV file.
This is what i have so far:
<?php
// Connect
include 'config.php'; // Config contains PDO database connection, etc.
// Generate filename
$filename = $_SESSION['current_group'].'-'.date('d.m.Y').'.csv';
// Get backup data from MYSQL database
$result_users = $conn->prepare('SELECT `user_name`, `user_email` FROM `users` WHERE `group_id` = ?');
$result_users->execute(array($_SESSION['current_group_id']));
$result_items = $conn->prepare('SELECT `item_name`, `item_value`, `item_group` FROM `items` WHERE `group_id` = ?');
$result_items->execute(array($_SESSION['current_group_id']));
# Create array
$list = array ("## START OF USER TABLE ##");
// Append results to array
while ($row = $result_users->fetch(PDO::FETCH_ASSOC)) {
array_push($list, array_values($row));
}
array_push($list,"## END OF USER TABLE ##");
array_push($list,"## START OF ITEMS TABLE ##");
while ($row = $result_items->fetch(PDO::FETCH_ASSOC)) {
array_push($list, array_values($row));
}
array_push($list,"## END OF ITEMS TABLE ##");
// Output array into CSV file
$fp = fopen('php://output', 'w');
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="'.$filename.'"');
foreach ($list as $ferow) {
fputcsv($fp, split(',',$ferow));
}
?>
The expected output is supposed to be something like:
## START OF USERS TABLE ##
"John","john#email.com"
"James","james#email.com"
## END OF USERS TABLE ##
## START OF ITEMS TABLE ##
"Soap","A lot","Household"
"Banana","2","Food"
## END OF ITEMS TABLE ##
etc.
The problem is that the valued do not correctly get pushed into the $list array.
What should i do in order to get the wanted result?
Thanks!
I think that your code its a little complicated for what you need. I don't test this code but probably works
$sql = "SELECT user_name, user_email FROM users WHERE group_id = :group_id
UNION
SELECT item_name, item_value, item_group FROM items WHERE group_id = :group_id
";
$sth = $conn->prepare($sql);
$sth->bindValue(':group_id', $_SESSION['current_group_id'], PDO::PARAM_INT);
$sth->execute();
$filename = $_SESSION['current_group'].'-'.date('d.m.Y').'.csv';
$data = fopen($filename, 'w');
while ($row = $sth->fetch(PDO::FETCH_ASSOC)) {
fputcsv($data, $row);
}
fclose($data);
I solved it by doing the following:
// Create array
$list = array ();
// Append results to array
array_push($list, array("## START OF USER TABLE ##"));
while ($row = $result_users->fetch(PDO::FETCH_ASSOC)) {
array_push($list, array_values($row));
}
array_push($list, array("## END OF USER TABLE ##"));
// Output array into CSV file
$fp = fopen('php://output', 'w');
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="'.$filename.'"');
foreach ($list as $ferow) {
fputcsv($fp, $ferow);
}