How to avoid post_max_size - php

Question

I have a problem. I am creating my own PHP application and I want to allow users to upload files.
My PHP
function make_upload() {
echo "<pre>";
print_r($_FILES);
echo "</pre>";
}
if (isset($_GET["upload"]) && $_GET["upload"] == "1") {
make_upload();
}
My HTML
<form action="?upload=1" method="post" enctype="multipart/form-data">
<input name="file[]" type="file" multiple/>
<input type="submit" value="Upload"/>
</form>
When I try to browse and select many files, the print_r($_FILES); shows blank Array ( ) instead of the array with my files. That's happens because of post_max_size which is set to 8M. If I change my post_max_size then I can select more images.
I want to share my application to be installed on websites, but I don't want to tell users to increase their post_max_size.
Is there any option to avoid post_max_size? (I see that in wordpress I can select images which are over the post_max_size - how is made?)

Answer 1

you can do it via .htaccess file.
php_value upload_max_filesize 200M
but sometime hosting provider does not allow you to overrite it. you will get 500 Internal Server Error in that case

Answer 2

You need to set the value of upload_max_filesize and post_max_size in your php.ini :
Maximum allowed size for uploaded files.
upload_max_filesize = 40M;
Must be greater than or equal to upload_max_filesize
post_max_size = 40M;
After modifying php.ini file(s), you need to restart your HTTP server to use new configuration.
If you can't change your php.ini, you're out of luck. You cannot change these values at run-time; uploads of file larger than the value specified in php.ini will have failed by the time execution reaches your call to ini_set.
See the Description of core php.ini directives.

Answer 3

you have not passed array to function pass it when you calling
if (isset($_GET["upload"]) && $_GET["upload"] == "1") {
make_upload($_FILES); // pass this $_FILES array to function
}
AND function would be like this
function make_upload($_FILES) {
echo "<pre>";
print_r($_FILES); // will print array
echo "</pre>";
}