I have to admit, uploading a file in PHP is so much easier than doing the same thing in ASP.
With ASP, I used a 3rd-party component (DLL) SA-FileUpload to do my file uploads.
With PHP, file upload capability is already built-in. The file information can easily be accessed by the following variables.
echo 'filename: ' . $_FILES['uploadfile']['name']; echo "<br>"; echo 'file type: ' . $_FILES['uploadfile']['type']; echo "<br>"; echo 'size: ' . $_FILES['uploadfile']['size']; echo "<br>"; echo 'tmp_name: '. $_FILES['uploadfile']['tmp_name']; echo "<br>"; echo "error code: " . $_FILES['uploadfile']['error'];
The uploaded file is stored in a temporary location with a temporary filename. Then you do your file validation, and if everything is OK, you need to move the temporary file to it’s final destination and filename.
// this is our upload directory $uploaddir = 'uploads/'; // build fullpathname ,i.e. uploaddir + filename $uploadfile = $uploaddir . basename($_FILES['uploadfile']['name']);
… do your file validation here, check file extension, size, etc…
if (move_uploaded_file($_FILES['uploadfile']['tmp_name'], $uploadfile)) {
echo "File is valid, and was successfully uploaded.\n";
} else {
$errmessage ="file upload failed";
echo $errmessage;
} // end if move
Easy peasy!
Any failure in the file upload process will be registered in this variable.
$_FILES[‘uploadfile’][‘error’]
Possible values are (say you’re using a Switch statement):
case UPLOAD_ERR_INI_SIZE: // 1 return 'ERR: The uploaded file exceeds the upload_max_filesize directive in php.ini'; case UPLOAD_ERR_FORM_SIZE: // 2 return 'ERR: The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form'; case UPLOAD_ERR_PARTIAL: // 3 return 'ERR: The uploaded file was only partially uploaded'; case UPLOAD_ERR_NO_FILE: // 4 return 'ERR: No file was uploaded'; case UPLOAD_ERR_NO_TMP_DIR: // 6 return 'ERR: Missing a temporary folder'; case UPLOAD_ERR_CANT_WRITE: // 7 return 'ERR: Failed to write file to disk'; case UPLOAD_ERR_EXTENSION: // 8 return 'ERR: File upload stopped by extension';