Friday, 17 May 2013

PHP file upload and Saving

PHP file upload and Saving:

                PHP file upload and saving in server is simple. We need to have a HTML form and PHP script to get the file and upload to server. Here i am going to tell you the step by step guidance to do this.

  HTML form:

<form action="file.php" method="post" enctype="multipart/form-data">
//First start aform tag, Method may be POST or GET. POST method is recommended since it is secured, Then encryption type
<label>File Name:</label>
//this is jus a label
<input type="file" name="myfile" id="myfile"><br>
//file is the tag to upload files
<input type="submit" name="submit" value="Submit">
//this is normal submit button to submit the form
//that's it

Now we have to write PHP script to do further things.

PHP Script(file.php); 

The following code is to just verify whether file is uploaded correctly or not. Later i will show you how to store the uploaded file into server.
if ($_FILES["myfile"]["error"] > 0)
//first check whether errors are there or not. If not then proceed
  echo "Sorry Have some Error: " . $_FILES["myfile"]["error"] . "<br>";
//Displays error message and exact reason for error
//if no error then display details of file
echo "Well your file has been uploaded successfully in to server";
  echo "File name: " . $_FILES["myfile"]["name"] . "<br>";
  echo "Your File Type: " . $_FILES["myfile"]["type"] . "<br>";
  echo "Your File Size: " . ($_FILES["myfile"]["size"] / 1024) . " kB<br>";
  echo "Your file stored : " . $_FILES["myfile"]["tmp_name"];
That is it. Now we move on to PHP script to to store files in server Location

 PHP Script:(to store in file)

  As everyone do, We also Store files in Upload folder. Here is the code for that. Just copy and paste it after above code. If you do like this then you can able able to see uploaded file information and success message if uploaded correctly.
if (file_exists("upload/" . $_FILES["myfile"]["name"]))
//we must check whether file is Already exist or not. We must do it for hassle free operation
      echo $_FILES["file"]["name"] . " already exists. ";
     //if it exist then we have to say exist
    // we can upload even if it is already exist by renaming it. I showed you the codes below for that
      move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" . $_FILES["myfile"]["name"]);
//it is PHP function to move files to server
      echo "Stored in: " . "upload/" . $_FILES["myfile"]["name"];
//final message to echo stored location

PHP script:(to rename before Store in folder)

 Always we need to rename the files before saving to server. Because users may upload files with same name. If that happens then the old file with same name gets replaced with new one. So we need to rename all files before uploading to server. For that use the below piece of code:  $randomdigit=rand(0000,9999);
//generate a randome number. You may use letters or alphanumeric also
//get the filen ame in to $filename
//Now combine random number and filename to get ne file name
$path= "resumes/".$newfilename;
$path variable holds the location of folder
copy($_FILES["file"]['tmpname'], $path);
//this php function can also upload files to server like move_uploaded_file

Check one more time whether new file name is exist in upload/ folder. If it exists the generate random number one more time and then copy to server.

That is it.



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