Captcha - PHP GD Library

As Web Application development continues to grow, the need for CAPTCHA is essential. The captcha does it prevents a robot from trying to submit a form on your website.

Increasing Website Page Load Speeds

By increasing your website speed, you can: increase user experience, have higher conversions, promote engagement, and generate even higher search rankings.

Things to consider

1) Eliminate render-blocking JavaScript and CSS in above-the-fold content  
2) Optimize images  
3) Leverage browser caching  
4) Reduce server response time  
5) Minify CSS  
6) Minify HTML  
7) Minify JavaScript

Eliminate render-blocking JavaScript and CSS in above-the-fold content

This means that your HTML references a blocking external JavaScript file in the above-the-fold portion of your page.
JavaScript needed to render the above-the-fold region should be inlined, and JavaScript needed to add additional functionality to the page should be deferred until after the above-the-fold content has been delivered.

Generally, the bulk of the JavaScript code handles user-initiated events occur after the page is loaded.
In order to defer loading of these JavaScripts insert a JavaScript event listener in the head of the containing document that forces the external file to be loaded after the onload event.

I recommend adding a very simple scripted DOM element. Here’s an example code that Google recommends.

<script type="text/javascript">

// Add a script element as a child of the body

function downloadJSAtOnload() {

var element = document.createElement("script");

element.src = "deferredfunctions.js";

document.body.appendChild(element);

}

// Check for browser support of event handling capability

if (window.addEventListener)

window.addEventListener("load", downloadJSAtOnload, false);

else if (window.attachEvent)

window.attachEvent("onload", downloadJSAtOnload);

else window.onload = downloadJSAtOnload;

</script>

If you are using a JavaScript library (like jQuery) it can be safely added after the above-the-fold content is rendered.

Optimize images

Keep your image sizes to a minimum to reduce the amount of time a person waits for it to load. Formatting and compressing images can save many bytes of data. You can use Compress Now, an online image compressor.

Leverage browser caching

Use .htaccess to cache files.

<IfModule mod_expires.c>

ExpiresActive On

ExpiresByType image/jpg "access plus 1 year"

ExpiresByType image/jpeg "access plus 1 year"

ExpiresByType image/gif "access plus 1 year"

ExpiresByType image/png "access plus 1 year"

ExpiresByType text/css "access plus 1 month"

ExpiresByType application/pdf "access plus 1 month"

ExpiresByType text/x-javascript "access plus 1 month"

ExpiresByType application/x-shockwave-flash "access plus 1 month"

ExpiresByType image/x-icon "access plus 1 year"

ExpiresDefault "access plus 2 days"

</IfModule>

Reduce server response time

Load your CSS first and your JavaScript last.

<!DOCTYPE html>

<html>

    <head>

        <title>RRpowered.com</title>

        <style type="text/css">

        /*CSS goes here*/

        </style>

        <script type="text/javascript">

        /*JavaScript*/    

        </script>

    </head>

    <body>

        Body content here

    </body>

</html>

Use Gzip to compress files

How to enable Gzip on your server:

<ifModule mod_gzip.c>

mod_gzip_on Yes

mod_gzip_dechunk Yes

mod_gzip_item_include file .(html?|txt|css|js|php|pl)$

mod_gzip_item_include handler ^cgi-script$

mod_gzip_item_include mime ^text/.*

mod_gzip_item_include mime ^application/x-javascript.*

mod_gzip_item_exclude mime ^image/.*

mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*

</ifModule>

 
Make Fewer HTTP Requests and avoid CSS Expressions.

Minify CSS, HTML, JavaScript

• For minifying HTML, you can use an online compressor called HTML Compressor
• For minifying CSS and JavaScript, use YUI Compressor

A good tool for analyzing your website speed is Google’s PageSpeed Insights tool!

Source From: http://www.rrpowered.com

PHP Time Ago

A simple way to display ago with UNIX time.

Displaying the time ago.
To display the time ago. Just add this where you want to display the time ago.

<?PHP
/*Created by Barrett at RRPowered.com*/
include_once('ago.php');//Include the ago.php file 
$cur_time1 ="1291684422";//Your Unix time from database
echo time_ago($cur_time1) ;
?>

Here is the PHP file!
This file is called ago.php

<?PHP
/*Created by Barrett at RRPowered.com*/
//Call the function
function time_ago($cur_time){
$time_ = time() - $cur_time;
 
$seconds =$time_;
$minutes = round($time_ / 60);
$hours = round($time_ / 3600);
$days = round($time_ / 86400);
$weeks = round($time_ / 604800);
$months = round($time_ / 2419200);
$years = round($time_ / 29030400);
 
//Seconds
if($seconds <= 60){ 
   $time="$seconds seconds ago";   
 
//Minutes    
}else if($minutes <= 60){ 
   if($minutes == 1){
   $time="one minute ago";
   }else{
   $time="$minutes minutes ago";
   } 
//Hours
}else if($hours <= 24){ 
  if($hours == 1){
  $time="one hour ago";
  }else{
  $time="$hours hours ago";
  } 
//Days 
}else if($days <= 7){ 
   if($days == 1){
   $time="one day ago";
   }else{
   $time="$days days ago";
   } 
//Weeks
}else if($weeks <= 4){ 
  if($weeks == 1){
  $time="one week ago";
  }else{
  $time="$weeks weeks ago";
  } 
//Months  
}else if($months <= 12){ 
  if($months == 1){
  $time="one month ago";
  }else{
  $time="$months months ago";
  } 
//Years 
}else{ 
  if($year == 1){
  $time="one year ago";
  }else{
  $time="$year years ago";
  }  
}
return $time;
}
?>


Source Form: http://www.rrpowered.com