PHP - Is Responsive Worth It?

So I've been using this websocket: http://code.google.com/p/phpwebsocket/   Love it because I don't know javascript as well as I do PHP. (Absolutely hated learning socket.io and their style of javascript, just gave up on it).   Anyways, I'm using MYSQL with the php socket for the chatroom authentication with my forum. (Sending the cookie values to the socket, to authenticate user). It's working fine and the MYSQL only get's called for each time a user is authenticated (logged into the websocket). The usernames and sessions are actually stored in a Temporary array which is nice. So only on authentication it queries the database for the authentication itself. (Very lightweight and a smart way for a chat system).   My question is, how does this compare to a node.js and socket.io server with a MYSQL plugin, etc? seems like that route would actually be more intensive?   I don't even need to include the socket.io.js for the client / PHP setup I have here as well. This way seems lightweight in my opinion (clientside) but not sure on the server end.   Thoughts?    TLDR: Running a PHP Websocket as compared to a node.js/socket.io server with mysql plugins the same in performance? Is it even noticeable? Should I be worried?   Edit: Disregard  compatibility issues too.  ( Using this http://tools.ietf.org/html/rfc6455 protocol is fine for my audience and intentions )
Edited by Monkuar, 02 December 2014 - 07:46 PM.

I am using Amazon's S3 service to allow users to upload images.   Since you have to pay for this service, my plan was to resize all uploaded images (maybe to a max of 200 pixels wide or something) immediately before sending them to Amazon.

I googled this and only thing I found said that "resizing on the fly is slow and expensive because disk space is cheaper than CPU."  Is this accurate?

Anyone have any thoughts on this?  I feel like I have to restrict the size of images some way because I don't wan't people uploading huge 2000x2000 images.

In case it matters, below is some code I have used below for resizing (albeit on my own server), so I imagine I'll use something similar for this new project which ultimately sends the image to Amazon.

Code: [Select]
// This is the temporary file created by PHP
$uploadedfile = $_FILES['userfile']['tmp_name'];

// Create an Image from it so we can do the resize
$src = imagecreatefromjpeg($uploadedfile);

// Capture the original size of the uploaded image
list($width,$height) = getimagesize($uploadedfile);

$newheight=70;
$newwidth= 70;

$tmp=imagecreatetruecolor($newwidth,$newheight);

// this line actually does the image resizing, copying from the original
// image into the $tmp image

imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,$width,$height);

// now write the resized image to disk. I have assumed that you want the
// resized, uploaded image file to reside in the ./images subdirectory.

$imagefolder = 'images/userimages/user' . $_SESSION['userid'] . '.jpg';
$filename = $imagefolder;
$_SESSION['filename'] = $filename;
if (imagejpeg($tmp,$imagefolder,100)) {
$imagemessage = "File is valid, and was successfully uploaded into FOLDER.\n";
$success="yes";
} else {
$imagemessage = "Possible file upload attack!\n";
$success="no";
}
imagedestroy($src);
imagedestroy($tmp); // NOTE: PHP will clean up the temp file it created when the request
// has completed.

}

I am trying to get a website up for my mother and am running into so many brick walls. There is so much i dont know about php. I know basics. What i would really love is some to try to tutor me through what i need to know. If anyone could do this for me i would be forever grateful.

I have started learning OOP, by following a few tutorials, My problem with most tutorial is they show you how, but don't tell you the what and the why. It's all good an well seeing what to do, but if you have no idea why it's being done, you don't learn much. I started a tutorial on Udemy but am not actually gaining a lot from it. I want to alter the code so that it will do it the way I want it to.

I am not wanting you to write the code for me, if you do please explain it so that I can understand the logic, preferably show me where to make changes and point me at the php tutorial that can solve my problem. I have been trying to solve this for a couple of weeks now, I tried a few things but none worked. 

The full followLinks function
 

function followLinks($url) {
	global $alreadyCrawled;
	global $crawling;
	$host = parse_url($url)["host"];
		
	$parser = new DomDocumentParser($url);
	
	$linkList = $parser->getLinks();

	foreach($linkList as $link) {
		$href = $link->getAttribute("href");
		
		if((substr($href, 0, 3) !== "../") AND (strpos($href, $host) === false)) {
			continue;
		}
		else if(strpos($href, "#") !== false) {
			continue;
		}
		else if(substr($href, 0, 11) == "javascript:") {
			continue;
		}

		// I need to change this below somehow, the two arrays are identical, 
		// What I want to do is move $href(crawled) to $alreadyCrawled  and remove it from $crawling
		// I also want to check if the current $href (crawling) is in $alreadyCrawled and if it is skip crawling and move on to the next one.
		
		//In essence I want to prevent the crawler from crawling anything already crawled in order to speed up the crawler.

		$href = createLink($href, $url);

		if(!in_array($href, $alreadyCrawled)) {
			$alreadyCrawled[] = $href;
			$crawling[] = $href;
		} else { continue;}

		

		echo $href . "<br>";
		
	}

	array_shift($crawling);

	foreach($crawling as $site) {	 		 		
	   followLinks($site); 
	} 	

}

$startUrl = "https://imagimedia.co.za";
followLinks($startUrl);
?>

Result.

From the ../blogs page there should be at least 20 more entries, that are not being listed. can anyone tell me why? 

 

https://imagimedia.co.za/../seo/
https://imagimedia.co.za/../pages/marketing.html
https://imagimedia.co.za/../pages/web-design.html
http://imagimedia.co.za/
https://imagimedia.co.za/../website-cost-quote.php
https://imagimedia.co.za/../blogs/history.html
https://imagimedia.co.za/../blogs/payment.html
https://imagimedia.co.za/../blogs/copy.html
https://imagimedia.co.za/../blogs/cycle.html
https://imagimedia.co.za/../blogs/information.html
https://imagimedia.co.za/../blogs/privacy.html
https://imagimedia.co.za/../blogs/terms.html
https://imagimedia.co.za/../blogs/content-is-king.html
https://imagimedia.co.za/../blogs/pretoria-north-web-design.html
https://imagimedia.co.za/../blogs/annlin-web-design.html
https://imagimedia.co.za/../blogs/
http://imagimedia.co.za
http://imagimedia.co.za/../seo/
http://imagimedia.co.za/../pages/marketing.html
http://imagimedia.co.za/../pages/web-design.html
http://imagimedia.co.za/../website-cost-quote.php
http://imagimedia.co.za/../blogs/history.html
http://imagimedia.co.za/../blogs/payment.html
http://imagimedia.co.za/../blogs/copy.html
http://imagimedia.co.za/../blogs/cycle.html
http://imagimedia.co.za/../blogs/information.html
http://imagimedia.co.za/../blogs/privacy.html
http://imagimedia.co.za/../blogs/terms.html
http://imagimedia.co.za/../blogs/content-is-king.html
http://imagimedia.co.za/../blogs/pretoria-north-web-design.html
http://imagimedia.co.za/../blogs/annlin-web-design.html
http://imagimedia.co.za/../blogs/

I know I am also going to have to exclude duplicates created by the http and https pages. But that is not my main issue. 

Hello   I am working on a site and the theme is a responsive theme but the header background is not resizing on mobile and tablets below is a link to the site

http://unitednews.sr/category/news/

each category / page has a unique header , this is what I have in css for category news

body.category-news  #header-wrap { background: url( http://unitednews.sr/wp-content/uploads/2014/10/Header_UnitedNews.jpg);
background-repeat:no-repeat;
}

Adding background size: cover does not work any idea ?
Edited by crawling, 13 November 2014 - 11:47 AM.