upload and diplay big CSV file - php

Question

I have a script that uploads and display a CSV file into HTML table.
My problem is that I have an error when I try to open big files.
My file is about 4.5 Mo with 80000 lines. It works fine with small files but I get
Warning: fopen(upload/test.csv): failed to open stream: No such file or directory in /var/www/cvs/PHP charts/sb-admin-v2/test.php on line 45
with big files
Here is my code
<form action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="post" enctype="multipart/form-data">
<input type="file" name="file" id="file" />
<input type="submit" name="submit" />
</form>
<?php
//upload
// for set memory limit & execution time
ini_set('memory_limit', '512M');
ini_set('max_execution_time', '180');
if ( isset($_POST["submit"]) ) {
if ( isset($_FILES["file"])) {
//if there was an error uploading the file
if ($_FILES["file"]["error"] > 0) {
echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
}
else {
//if file already exists
if (file_exists("upload/" . $_FILES["file"]["name"])) {
echo $_FILES["file"]["name"] . " already exists. ";
}
else {
//Store file in directory "upload" with the name of "uploaded_file.txt"
$storagename = "test.csv";
move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" . $storagename);
echo "Stored in: " . "upload/" . $_FILES["file"]["name"] . "<br />";
}
}
} else {
echo "No file selected <br />";
}
}
//display
$row = 1;
if (($handle = fopen("upload/test.csv", "r")) !== FALSE) {
echo '<table border="1">';
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
$num = count($data);
if ($row == 1) {
echo '<thead><tr>';
}else{
echo '<tr>';
}
for ($c=0; $c < $num; $c++) {
//echo $data[$c] . "<br />\n";
if(empty($data[$c])) {
$value = " ";
}else{
$value = $data[$c];
}
if ($row == 1) {
echo '<th>'.$value.'</th>';
}else{
echo '<td>'.$value.'</td>';
}
}
if ($row == 1) {
echo '</tr></thead><tbody>';
}else{
echo '</tr>';
}
$row++;
}
echo '</tbody></table>';
fclose($handle);
}
?>

Answer 1

Well when I ran into this problem I resorted to a client side solution with https://github.com/knrz/CSV.js. Works very well and takes the load off my server. Only thing is I did not need the entire CSV to be uploaded to my server, once parsed only selective portions were sent using ajax.
If you are only trying to display the data in HTML table this can be a very good solution.