Increase Image Upload File Size Limit on OpenCart


OpenCart’s default image upload size is 300KB and that is simply too small for clients that don’t have the knowledge to resize their images before uploading them. Although uploading digital camera images does use more bandwidth, sometimes it can not be avoided. To adjust the image upload size make the following changes around line 436 of admin/controller/common/filemanager.php:

if ($this->request->files['image']['size'] > 3000000) {
	$json['error'] = $this->language->get('error_file_size');
}

In this case we have increased the upload size limit to 10MB, also make sure that your php configuration will allow file uploads and posts of this size.

How to delete file in PHP


To delete the file from server we use unlink()


Example:
<?php
$filename = "testfile.txt";
unlink($filename);
?>

Example:
<?php
$file = fopen('test.txt', 'a');
fwrite($file, 'how to delete file');
fclose($file);
unlink('test.txt');//delete test.txt file.
?>