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PHP Script to Upload a .csv File Then Insert into MYSQL

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This following will allow you to upload a .csv file via a web form then insert that data into a MYSQL database.


I had a request for it this morning and so now that I have it created I figured I would share. Let me know if you see anything that would be an improvement.


Step 1 - Create Web Form

<form enctype="multipart/form-data" action="uploader.php" method="POST">
<input type="hidden" name="MAX_FILE_SIZE" value="100000" />
Choose a file to upload: <input name="uploadedfile" type="file" /><br />
<input type="submit" value="Upload File" />


Step 2 - Create the Uploader.php File

// Where the file is going to be placed
$target_path = "uploads/";
/* Add the original filename to our target path.
Result is "uploads/filename.extension" */
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);
$target_path = "uploads/";
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
echo "The file ".  basename( $_FILES['uploadedfile']['name']).
" has been uploaded";
} else{
echo "There was an error uploading the file, please try again!";
<br><a href="./import.php">Click To Import</a>


Step 3 - Create the Import.php File that will insert the data into MYSQL

/* Edit the entries below to reflect the appropriate values
$databasehost = "localhost";
$databasename = "";
$databasetable = "";
$databaseusername ="";
$databasepassword = "";
$fieldseparator = ",";
$lineseparator = "n";
$csvfile = "uploads/nameof.csv";
/* Would you like to add an ampty field at the beginning of these records?
/* This is useful if you have a table with the first field being an auto_increment integer
/* and the csv file does not have such as empty field before the records.
/* Set 1 for yes and 0 for no. ATTENTION: don't set to 1 if you are not sure.
/* This can dump data in the wrong fields if this extra field does not exist in the table
$addauto = 0;
/* Would you like to save the mysql queries in a file? If yes set $save to 1.
/* Permission on the file should be set to 777. Either upload a sample file through ftp and
/* change the permissions, or execute at the prompt: touch output.sql && chmod 777 output.sql
$save = 0;
$outputfile = "output.sql";

if(!file_exists($csvfile)) {
echo "File not found. Make sure you specified the correct path.n";
$file = fopen($csvfile,"r");
if(!$file) {
echo "Error opening data file.n";
$size = filesize($csvfile);
if(!$size) {
echo "File is empty.n";
$csvcontent = fread($file,$size);
$con = @mysql_connect($databasehost,$databaseusername,$databasepassword) or die(mysql_error());
@mysql_select_db($databasename) or die(mysql_error());
$lines = 0;
$queries = "";
$linearray = array();
foreach(split($lineseparator,$csvcontent) as $line) {
$line = trim($line," t");

$line = str_replace("r","",$line);

This line escapes the special character. remove it if entries are already escaped in the csv file
$line = str_replace("'","'",$line);

$linearray = explode($fieldseparator,$line);

$linemysql = implode("','",$linearray);

 $query = "insert into $databasetable values('','$linemysql');";
 $query = "insert into $databasetable values('$linemysql');";

$queries .= $query . "n";
if($save) {

if(!is_writable($outputfile)) {
 echo "File is not writable, check permissions.n";

else {
 $file2 = fopen($outputfile,"w");

 if(!$file2) {
  echo "Error writing to the output file.n";
 else {

echo "Found a total of $lines records in this csv file.n";



For this to work correctly all you need to do is put all 3 of these .php files in the same directory and create another directory within called "uploads".

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Is there any error checking in the script to see if it really is a csv file and not a trojan/virus or similar that is being uploaded? For privet back-end use i doesn't really matter but if you go live to the public it is fairly easy to exploit. Otherwise a nice useful script, thanks!

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