MaggsWeb:7 » HTML

prevent caching of files

admin — Wed, 01 Jun 2011 09:59:28 +0000

Version them in their with their timestamp. This way, when they change, the link will change and the browser will reload the sitemap… Otherwise it will be fine to be cached as it wont have changed.

^?View Code HTML

URL rewriting – WordPress style

chris — Mon, 07 Dec 2009 13:17:40 +0000

Add this into your .htaccess file…

^?View Code APACHE

RewriteEngine On
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1

The first RewriteCond checks if the requested URL exists as a file on the filesystem. In mod_rewrite, -f refers to a file, while the bang is the “not” operator. Therefore, !-f means “if the request script filename does not exist as a file”.

If the first rewrite_cond succeeds (that is, the requested file wasn’t found), then Apache moves on to the next condition. The !-d directive means it the condition succeeds if the requested script does correspond to an existing directory on the server.

Finally, if both conditions succeed, the request is forwarded to the index.php file, as specified in the RewriteRule directive.

You can now access request POST data.

English Ordinals for dates in PHP

chris — Fri, 27 Nov 2009 08:07:20 +0000

Displaying the day-part of the date, followed by the month etc. just looks plain wrong and lazy – ’20 September 2009′. ’20th’ would look much nicer and can be achieved without too much hard work. A simple function…

^?View Code PHP

 

    function dispDay($i) {
        switch( floor($i/10) % 10 ) {
            default:
                switch( $i % 10 ) {
                    case 1: $ordinal = 'st';
                    case 2: $ordinal = 'nd';
                    case 3: $ordinal = 'rd';   
                }
            case 1: $ordinal = 'th';
        }
        return $i."^".$ordinal."";
    }
?>

Catching a keyPress..

chris — Tue, 04 Aug 2009 10:51:33 +0000

…like ‘Enter’ for instance.

^?View Code JAVASCRIPT

function handleEnter (field, event) {
  var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
  if (keyCode == 13) { 
        //do something, eg:
	submitForm();
  } else {
   return true;
  }
}

Print a Page, or Print a Section

chris — Sun, 26 Jul 2009 10:08:31 +0000

This is another functionality that I have been looking or for a while. I haven’t tried it yet, but intend to add this to my default toolbox! I am sticking it here for now – and will update this when I have used it.

^?View Code JAVASCRIPT

 
function printPageComponent() {
  html  = '';
  html += '  \n";
  html += "Print this page";
  html += "";
  return html;
}

Cross-browser bookmark link

chris — Sun, 26 Jul 2009 09:56:56 +0000

‘Bookmark Me’ is a sort of IE thing and doesn’t usually work in FireFox, Safari, Chrome, etc.. so as a FireFox user I’ve never bothered with a bookmark links before.
FireFox users know that Ctrl+D is the shortcut for these browsers, and that most ‘Bookmark Me’ links just aren’t work clicking – as they won’t work.

And then I found this…

^?View Code JAVASCRIPT

 
function bookmarkIt(){
if(document.all){
   window.external.AddFavorite(location.href,document.title);
   }
else if(window.sidebar){
   window.sidebar.addPanel(document.title,location.href,'');
   }
}

…although I haven’t actually used it yet.

Flickering images inside ’s

chris — Fri, 24 Jul 2009 15:18:48 +0000

In IE6 and sometimes in IE7 the background images flicker if they’re also an . A small edition to .htaccess overrides the browsers default to load the backgrounds every time.

ExpiresActive On
ExpiresByType image/gif A2592000
ExpiresByType image/jpeg A2592000
ExpiresByType image/png A2592000

Reqires mod_expire on an Apache server (most have it).

Custom Error redirects with .htaccess

chris — Thu, 07 May 2009 12:37:55 +0000

Cold hard website errors are horrible and unnecessary. All you need is a few nice looking .html files in your directory somewhere, then use .htaccess to reditrect to these when there is an error. Obviously, no errors at all would be better….

The format for the .htaccess is :

ErrorDocument errornumber /file.html

For example, if the file notfound.html was in the root directory of my site and I wanted to use it for a 404 error I would use:

ErrorDocument 404 /notfound.html

If the file is not in the root directory of your site, you just need to put the path to it:

ErrorDocument 500 /errorpages/500.html

These are some of the most common errors:

?View Code APACHE

401 - Authorization Required
400 - Bad request
403 - Forbidden
500 - Internal Server Error
404 - Wrong page

and they can all be redirected to the same page, different pages, or even a dynamic page….

Detecting a mobile browser

chris — Wed, 01 Apr 2009 12:16:07 +0000

I have often looked at my sites on my mobile. Some look good, others look really bad – usually down to some clever fancy-arse stuff that wouldn’t even work on a mobile.

So, I have finally found this article that reckons it is sussed. I’m gonna try it out.

^?View Code PHP


if(checkmobile()) {
header("Location:http://www.whatever-url-you-want.com");
}
 
// Use like this....
 
function checkmobile(){
if(isset($_SERVER["HTTP_X_WAP_PROFILE"])) return true;
if(preg_match("/wap\.|\.wap/i",$_SERVER["HTTP_ACCEPT"])) return true;
if(isset($_SERVER["HTTP_USER_AGENT"])){
if(preg_match("/Creative\ AutoUpdate/i",$_SERVER["HTTP_USER_AGENT"])) return false;
 
$uamatches = array("midp", "j2me", "avantg", "docomo", "novarra",
"palmos", "palmsource", "240x320", "opwv", "chtml", "pda", "windows\ ce",
"mmp\/", "blackberry", "mib\/", "symbian", "wireless", "nokia", "hand",
"mobi", "phone", "cdm", "up\.b", "audio", "SIE\-", "SEC\-", "samsung",
"HTC", "mot\-", "mitsu", "sagem", "sony", "alcatel", "lg", "erics",
"vx", "NEC", "philips", "mmm", "xx", "panasonic", "sharp", "wap",
"sch", "rover", "pocket", "benq", "java", "pt", "pg", "vox", "amoi",
"bird", "compal", "kg", "voda", "sany", "kdd", "dbt", "sendo", "sgh",
"gradi", "jb", "\d\d\di", "moto");
 
foreach($uamatches as $uastring){
if(preg_match("/".$uastring."/i",$_SERVER["HTTP_USER_AGENT"])) return true;
}
 
}
return false;
}
?>

Shortcut Icon (favicon.ico)

chris — Wed, 11 Feb 2009 17:45:55 +0000

In short, a 16x16px bitmap, renamed, in the web root. Or is it?

This minimal approach does actually work, but done properly, they should have a few different size versions in the same file, so that not only do they show in the URL bar, and now more recently in the tabs as well (IE8+, FF3+), but also display a different (clearer) version when dragged to the desktop.

I have been using an online tool for a few years to make mine and it’s great.
http://tools.dynamicdrive.com/favicon/
Try and use the best format that you have, but MAKE IT SQUARE first, otherwise it will get squashed.

Use this code to in the section to add it..

^?View Code HTML