Error: Length parameter must be greater than 0
By: capitanqueso
If you ever try to upload an empty file using fread(), php may show a nasty warning (according to your "error_reporting") about "Length parameter must be greater than 0" especially if you are parsing this as xml. So in order to handle this error from here you may do the next:
<?php
$file = $_FILES['file'];
$error_text = true; // Show text or number
define("UPLOAD_ERR_EMPTY",5);
if($file['size'] == 0 && $file['error'] == 0){
$file['error'] = 5;
}
$upload_errors = array(
UPLOAD_ERR_OK => "No errors.",
UPLOAD_ERR_INI_SIZE => "Larger than upload_max_filesize.",
UPLOAD_ERR_FORM_SIZE => "Larger than form MAX_FILE_SIZE.",
UPLOAD_ERR_PARTIAL => "Partial upload.",
UPLOAD_ERR_NO_FILE => "No file.",
UPLOAD_ERR_NO_TMP_DIR => "No temporary directory.",
UPLOAD_ERR_CANT_WRITE => "Can't write to disk.",
UPLOAD_ERR_EXTENSION => "File upload stopped by extension.",
UPLOAD_ERR_EMPTY => "File is empty." // add this to avoid an offset
);
// error: report what PHP says went wrong
$err = ($error_text) ? $upload_errors[$file['error']] : $file['error'] ;
header("Content-Type: text/xml");
echo '<errors>
<error>'.
$err .'
</error>
</errors>
';
// Add your code to prevent fread() to run, either from here or with a previous "if"
?>
Archived Comments
Comment on this tutorial
- Data Science
- Android
- AJAX
- ASP.net
- C
- C++
- C#
- Cocoa
- Cloud Computing
- HTML5
- Java
- Javascript
- JSF
- JSP
- J2ME
- Java Beans
- EJB
- JDBC
- Linux
- Mac OS X
- iPhone
- MySQL
- Office 365
- Perl
- PHP
- Python
- Ruby
- VB.net
- Hibernate
- Struts
- SAP
- Trends
- Tech Reviews
- WebServices
- XML
- Certification
- Interview
categories
Related Tutorials
PHP convert string to lower case
PHP code to write to a CSV file for Microsoft Applications
PHP code to write to a CSV file from MySQL query
PHP code to import from CSV file to MySQL
Password must include both numeric and alphabetic characters - Magento
Error: Length parameter must be greater than 0
PHP file upload prompts authentication for anonymous users
PHP file upload with IIS on windows XP/2000 etc
Multiple File Upload in PHP using IFRAME
Resume or Pause File Uploads in PHP
Exception in module wampmanager.exe at 000F15A0 in Windows 8