When retrieving your file you can work with the uploaded file library of CI4 : https://codeigniter4.github.io/userguide/libraries/uploaded_files.html
In this lib you can use thegetRandomName()
function.
You can generate a cryptographically secure random filename, with the current timestamp prepended, with the getRandomName() method. This is especially useful to rename files when moving it so that the filename is unguessable
https://codeigniter4.github.io/userguide/libraries/files.html?highlight=getrandomname#new-features
You'll eventually get something similar to :
// get files from $_FILES
if($imagefile = $this->request->getFiles())
{
foreach($imagefile['images'] as $img)
{
// check if each file is valid and from an HTTP source
if ($img->isValid() && ! $img->hasMoved())
{
// generate a new random name and move the file
$newName = $img->getRandomName();
$img->move(WRITEPATH.'uploads', $newName);
}
}
}
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
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CodeIgniter is a framework that is known for requiring a minimum amount of customization to get it up and running. This allows those who choose it to work at a good pace. It has been updated many times since its inception in 2006. Now the most recent version is 4.0.3.
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