Need help in uploading videos of big size files

When i am uploading under 2 MB file, it is successfully uploaded but when i am trying to upload bigger file then its showing failed to upload issue... my code is following....please help me to get out of this situation...

<?php
function UploadOne($fname)
{
$uploaddir = 'uploadedfiles/';
if (is_uploaded_file($fname['tmp_name']))
{
	
	$filname = basename($fname['name']);
	
	$uploadfile = $uploaddir . basename($fname['name']);
	if (move_uploaded_file ($fname['tmp_name'], $uploadfile))
		$res = "File " . $filname . "was successfully uploaded and stored. Upload More<br>";
		
					include ('../config.php');
					mysql_query("INSERT INTO videos (id, path, name, title, content)
					VALUES ('$_POST[id]', 'url/$filname', '$_POST[date]', '$_POST[title]' , '$_POST[content]')");
					$data = mysql_query('SELECT * FROM videos ORDER BY id DESC LIMIT 1');
$info = mysql_fetch_array($data);
		
		$res = "<strong>$info[title]</strong>," . "\n Sucessfully Uploaded. \n Upload more".  "<br>" . "<a href='../videos.php'>View Videos</a>";
		}	
else
$res = "File ".$fname['name']." failed to upload.";
return ($res);
}
?>

Code (markup):

Thanks in advance...

 

By default, PHP allow a maximum file upload of 2MB. You can increase the limit when necessary.

Two PHP configuration options control the maximum upload size: upload_max_filesize and post_max_size.
Both can be set to, say, “10M” for 10 megabyte file sizes.

Remember, PHP scripts normally time-out after 30 seconds, but a 10MB file would take at least 3 minutes to upload on a healthy broadband connection.
So you need to set PHP’s max_input_time and max_execution_time to something like 300 (5 minutes specified in seconds).

You can set these options 3 way -

1. Set in your server’s php.ini configuration file so that they apply to all your applications.
   

   
   upload_max_filesize = 10M
   post_max_size = 10M
   max_input_time = 300
   max_execution_time = 300
   

   PHP:
2. Set in your code.
   

   
   ini_set('upload_max_filesize', '10M');  
   ini_set('post_max_size', '10M');  
   ini_set('max_input_time', 300);  
   ini_set('max_execution_time', 300);
   

   PHP:
3. If you’re using Apache, you can configure the settings in your application’s .htaccess file
   

   
   php_value upload_max_filesize 10M
   php_value post_max_size 10M
   php_value max_input_time 300
   php_value max_execution_time 300
   

   PHP:

 

This seems very helpful information, but there is one confusion... where to find the php.ini file on the server. i am using window hosting for the website and using IIS server...

 

These php.ini file may be in PHP folder or WINDOWS folder. I am not sure