Upload file via PHP

Uploading a file in PHP is an easy task and the user customization on websites needs to be allowed as this has become very important these days.

Follow the steps:

  • Configure The "php.ini" File
                      Before uploading the file, make sure the php file is configured. Turn on the file_upload directive in your "php.in" file. 
                                                         file_uploads = On
  • Create 'index.php' file
     Paste the following code in the file
         <!DOCTYPE html>
         <html lang="en">
         <body>

         <div class="container">
               <h2>File Upload Example</h2>
               <form role="form" action="index.php" method="post" enctype="multipart/form-data">
                        <div class="form-group">
                               <label for="fileToUpload">Select File</label>
                               <input class="form-control" type="file" name="fileToUpload" id="fileToUpload" required data-validation-required-message="Please define image path.">
                        </div>
                        <div id="success">
                               <div class = "<?php echo $resultClass;?>"><?php echo $result;?></div>
                        </div>
                        <button type="submit" name="submit" class="btn btn-success">Upload</button>
                </form>
         </div>
         </body>
         </html>

      • Ensure that the method="post" is used by the form.
      • enctype="multipart/form-data" is an attribute which determines how the form is encoded. Ensure the usage of this attribute in the form before submitting.
      • type="file" will be used to select file from the computer. 


  • Create a new folder with the name ‘files’ in the same place where index.php resides in:
  • Now place the following script at the top of the <!DOCTYPE html> tag.
                                 <?php
                                       if ( !empty($_POST)){
                                               $dir = "files/";
                                               $file_name = basename($_FILES['fileToUpload']['name']);
                                               $file_path = $dir . $file_name;
                                               $uploadOk = 1;
                                               if ($_FILES["fileToUpload"]["size"] > 500000) {
                                                            $uploadOk = 0;
                                                }
                                               if ($uploadOk == 0) {
                                                             $resultClass= 'alert-danger alert';
                                                            $result= 'Sorry, your file was not uploaded. Please try later';
                                                }
                     }
                              ?>
      • $dir = "files/"  : It specifies the directory of the file.
      • $file_path          : It specifies the path of the file.

  • Check if File Already Exists:
                          An error message is displayed if the file already exists in the uploads folder. In this case file uploading will be ignored:
                                                 if (file_exists($file_path)) {
                                                                $resultClass= 'alert-danger alert';
                                                                $result= 'File exist already. File uploading ignored.';
                                                }
  • Limit File Size:

                          A limit can be put on the size of the file to be uploaded:
                         if ($_FILES["fileToUpload"]["size"] > 500000) {
                                    $uploadOk = 0;
                        }
                        if ($uploadOk == 0) {
                                    $resultClass= 'alert-danger alert';
                                    $result= 'Sorry, your file was not uploaded. Please try later';

                        } 
  • Upload File:

                      Now Upload the file to the desired path.

                                     else if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $file_path)) {


                                                                $resultClass= 'alert-success alert';
                                                                $result= 'File uploaded successfully';
                                                }
                                                else {
                                                                $resultClass= 'alert-danger alert';
                                                                $result= 'Sorry, your file was not uploaded. Please try later';
                                                }



And You are done :)
Complete Upload File PHP Script:
This is how the complete Upload File PHP Script looks like:
                        if ( !empty($_POST)){
                                $dir = "files/";
                                $file_name = basename($_FILES['fileToUpload']['name']);
                                $file_path = $dir . $file_name;
                                $uploadOk = 1;

                                if ($_FILES["fileToUpload"]["size"] > 500000) {
                                                $uploadOk = 0;
                                }
                                if ($uploadOk == 0) {
                                                $resultClass= 'alert-danger alert';
                                                $result= 'Sorry, your file was not uploaded. Please try later';
                                }
                                else {
                                                if (file_exists($file_path)) {
                                                                $resultClass= 'alert-danger alert';
                                                                $result= 'File exist alredy. File uploading ignored.';
                                                }
                                                else if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $file_path)) {
                                                                $resultClass= 'alert-success alert';
                                                                $result= 'File uploaded successfully';
                                                }
                                                else {
                                                                $resultClass= 'alert-danger alert';
                                                                $result= 'Sorry, your file was not uploaded. Please try later';
                                                }
                                }


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