<?php
function onetarek_prevent_future_type( $post_data ) {
if ( $post_data['post_status'] == 'future' && $post_data['post_type'] == 'post' )#Here I am checking post_type='post' , you may use different post type and if you want it for all post type then remove "&& $post_data['post_type'] == 'post'"
{
$post_data['post_status'] = 'publish';
}
return $post_data;
}
add_filter('wp_insert_post_data', 'onetarek_prevent_future_type');
remove_action('future_post', '_future_post_hook');
?>

These codes prevents to create post_type=’future’ and publish the post immediately though the post date set for a future time. WordPress will not to thing about post date on publishing. It force WordPress to publish the post with future timestamps.

Suppose you want to add an extra custom field to store user’s twitter account username. By default this field is not exists in profile page ( As WordPress version 3.5.1). Add following code snippet in your plugin file or in theme functions.php. It will show an extra input field in user profile edit page. It will add a new meta key and value in the WordPress user meta table wp_usermeta in database. This new key will be loaded with user object.

add_action( 'show_user_profile', 'oneTarek_extra_user_profile_fields' );
add_action( 'edit_user_profile', 'oneTarek_extra_user_profile_fields' );
add_action( 'personal_options_update', 'oneTarek_save_extra_user_profile_fields' );
add_action( 'edit_user_profile_update', 'oneTarek_save_extra_user_profile_fields' );

function oneTarek_save_extra_user_profile_fields( $user_id )
 {
 if ( !current_user_can( 'edit_user', $user_id ) ) { return false; }
 update_user_meta( $user_id, 'oneTarek_twitter', $_POST['oneTarek_twitter'] );
 }
#Developed By oneTarek , http://oneTarek.com
function oneTarek_extra_user_profile_fields( $user )
 { ?>
 <h3>Extra Custom Meta Fields</h3>

 <table class="form-table">
 <tr>
 <th><label for="oneTarek_twitter">Twitter User Name</label></th>
 <td>
 <input type="text" id="oneTarek_twitter" name="oneTarek_twitter" size="20" value="<?php echo esc_attr( get_the_author_meta( 'oneTarek_twitter', $user->ID )); ?>">
 <span class="description">Please enter your Twitter Account User name, eg: oneTarek</span>
 </td>
 </tr>
 </table>
<?php }?>

I made a demo plugin with above codes. User my demo plugin to be clear about above codes.
Download My Demo Plugin to Add User Custom Field

• Using TinyMCE WYSIWYG Editor in WordPress Plugin
• WordPress Media Uploader in Plugin

• Add Custom field with wordpress user profile
• Add user custom field in pluign
• WordPress plugin to add extra meta fields for users
• How to user user custom fields
• Custom meta data for wordpress user
• How can I add new custom meta field for user profile
• Plugin tutorial to add user meta fields
• Create a new usermeta field for users
• Add Custom User Meta Fields
• How to Save Different Usermeta Fields
• Customize backend user profile
• Custom user registration by user meta
• Adding Custom Fields to WordPress User Profil
• Adding new meta key to wp_usermeta table in database

Go to your root directory where you installed your WordPress scripts.
Open wp-config.php
Add following line at end of the wp-config.php file.

 define( 'UPLOADS', 'wp-content/'.'my-media-files' );

If you don’t want to use wp-content and you want to store yours files outside of wp-contnet like http://www.example.com/my-media-files/ then use following line instead.

 define( 'UPLOADS', ''.'my-media-files' );

• How I Changed My WordPress Image Upload Folder?
• Changing The WordPress Upload Path?
• Change file upload folders on WordPress?
• How to change default image uploads folder in WordPress?
• How to change WordPress file upload directory?
• How to Change WordPress Media Directories?

Your may like: How to use WordPress Media Uploader in Plugin or Theme Admin page

1. http://onetarek.com/wp-content/uploads/2012/11/wptinymce.jpg
2. http://onetarek.com/wp-content/uploads/2012/11/wptinymce.jpg?myvar=sometext
3. http://onetarek.com/wp-content/uploads/2012/11/wptinymce.jpg?myvar=http%3A%2F%2Fonetarek.com
4. http://onetarek.com/wp-content/uploads/2012/11/wptinymce.jpg?myvar=http%3A%2F%2Fgoogle.com

My Problem has been solved, So you will not see any problem for above example urls. Test this URL style for your own website

First 3 URLs are showing the image file but 4^th URL is showing not found page by WordPress. I tested this process in another non WordPress site, but there is no problem. I think this problem is happening only in WordPress website. I am trying to find out the main technical cause of this issue. I will update this post when I will find any solution. Please a write a comment if you know any solution.

WordPress and URL Query Parameter with External Domain Problem
Apache returns 404 for cross domain link in query string

Experiment and Discussions:

I wrote this problem on WordPress Support Forum. Read and join to my discussion thread.

I have tested with 7 different domains those are hosted in HostGator server. 2 of theme are non wp site and 5 are wordpress site.
1 wp and 1 non wp sites work fine. Other 5 sites returns not found. Here I am trying to prove that HostGator is an issue here.

My more experimental links are here

Discussions in ServerFault.com

Solution

I got the solution.
I asked to HostGator support. They told me that They run mod_security which is the cause of the problem. They ran a command to whitelist a mod_sec rule my site was hitting. You have to know detail about mod_security. If you have root control on the server, you could change it in php.ini

function getParameterByName(name)
{
  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
  var regexString = "[\\?&]" + name + "=([^&#]*)";
  var regex = new RegExp(regexString);
  var found = regex.exec(window.location.search);
  if(found == null)
    return "";
  else
    return decodeURIComponent(found[1].replace(/\+/g, " "));
}

Your url parameters may be url-encoded and you want to get decoded value, this function return decoded value. There are an alternative way to write this function. Following function do the same work like above function. You may use following codes instead.

Method 2 :

function getParameterByName(name) {
 return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search)||[,""])[1].replace(/\+/g, '%20'))||null;
}

When your given parameter name is not exists in the url then this function returns null instead of ‘null’.

Using jQuery

I found two jQuery plugins to get url parameter value

• query-object
• getURLParam

To learn more critical points to play with URL query string parameters you may go to following discussion pages.
Reference 1 , Reference 2

This function returns the answer of following queries

• JavaScript to read a URL query string
• Getting Query String Parameters with JavaScript
• Javascript to get Query String from URL in raw JavaScript
• Get URL and URL Parts in JavaScript
• Get Current Page QueryString Using JavaScript
• JavaScript Function to Get URL Query Values
• Raw JavaScript and URL parameters
• JavaScript to Read GET variables from URL

Download Slim

FEATURES

• Powerful router
  • Standard and custom HTTP methods
  • Route parameters with wildcards and conditions
  • Route redirect, halt, and pass
  • Route middleware
• Template rendering with custom views
• Flash messages
• Secure cookies with AES-256 encryption
• HTTP caching
• Logging with custom log writers
• Error handling and debugging
• Middleware and hook architecture
• Simple configuration

SYSTEM REQUIREMENTS

PHP 5.3.0 or newer

SLIM DOCUMENTAION

This guide was originally posted at http://www.tincanapi.co.uk/wiki/Guide:PHP_Simple_LRS . Due to an error this site is not accessible now. I collected this guide form a google cached data. I post this content here just for my personal purpose. Now the main author posted his codes on gitHub Project PHPCan

current product status

The LRS is receiving statements via POST (and PUT – untested), generating a statement ID and stored time-stamp and storing these with the raw statement in a 3 field database.

Next Steps

• json decode statement to add statement ID and stored fields if they are not present, then re-encode to store.
• Ensure no duplicate statement IDs and return appropriate http headers in event of conflict
• test PUT
• Implement GET for statements (single and all)
• State
• Actor and Activity profiles
• dot Ts and cross Is of compliance with spec

notes for guide and code

Notes

http://www.slimframework.com/

SQL

CREATE TABLE lrs_statements
(
statementID VARCHAR(255) NOT NULL COLLATE utf8_general_ci,
statement TEXT NOT NULL COLLATE utf8_general_ci,
stored TIMESTAMP NOT NULL,
PRIMARY KEY (statementID)
)

PHP code

<!--?php require 'Slim/Slim.php';   $app = new Slim(); //POST route $app--->post('/public', 'lrsPost');

//PUT route
$app->put('/public/:id', 'lrsPut');

$app->run();

function lrsPost(){
$DBConnectionArray = returnDBConnectionArray();

    $inputStatement= file_get_contents("php://input");

//decode the JSON as an associative array.
$statementObj = json_decode($inputStatement, TRUE);

//Stored
$dateNow = new DateTime();
$stored = $dateNow->format('Y-m-d H:i:s');
$statementObj[0]['stored'] = $stored;

//Add a statement ID if it doesn't already exist or if it's NULL. If it does exist, use the existing one.
$statementID;
if (isset($statementObj[0]['id']))
{
$statementID = $statementObj[0]['id'];
}
else
{
$statementID = make_uuid();
$statementObj[0]['id'] = $statementID;
}

//re-encode the statement
$statement = json_encode($statementObj);

$query = "INSERT INTO lrs_statements VALUES ('".$statementID."','".$statement."','".$stored."')";

mysql_connect($DBConnectionArray["DBserver"],$DBConnectionArray["DBuser"], $DBConnectionArray["DBpassword"] );

mysql_select_db($DBConnectionArray["DBname"]) or die( "Unable to select database");

mysql_query($query);

mysql_close();
}

function lrsPut(){
$DBConnectionArray = returnDBConnectionArray();

    $statement= file_get_contents("php://input");
$date = new DateTime();

$query = "INSERT INTO lrs_statements VALUES ('".make_uuid()."','".$statement."','".$date->format('Y-m-d H:i:s')."')";

mysql_connect($DBConnectionArray["DBserver"],$DBConnectionArray["DBuser"], $DBConnectionArray["DBpassword"] );

mysql_select_db($DBConnectionArray["DBname"]) or die( "Unable to select database");

mysql_query($query);

mysql_close();
}

function make_uuid() {

    return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
        // 32 bits for "time_low"
        mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ),

        // 16 bits for "time_mid"
        mt_rand( 0, 0xffff ),

        // 16 bits for "time_hi_and_version",
        // four most significant bits holds version number 4
        mt_rand( 0, 0x0fff ) | 0x4000,

        // 16 bits, 8 bits for "clk_seq_hi_res",
        // 8 bits for "clk_seq_low",
        // two most significant bits holds zero and one for variant DCE1.1
        mt_rand( 0, 0x3fff ) | 0x8000,

        // 48 bits for "node"
        mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff )
    );
}

function returnDBConnectionArray()
{
$array = array(
    "DBtype" => "mysql",
"DBserver" => "cust-mysql-123-05",
"DBname" => "tincanapicouk_715945_db1",
"DBuser" => "utincan_715945_1",
"DBpassword" => "Taztaz1",
);
return $array;
}

?>

.htaccess

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} ^/LRS/
RewriteRule ^/?LRS(/.*)?$ %{DOCUMENT_ROOT}/LRS/index.php [QSA,L]

This Post May Be The Answer of Following Queries:

• A Basic LRS for TinCanAPI
• Self Hosted LRS example
• Self hosted Learning Record Store Script
• Simple LRS example with PHP
• Build your own Learning Record Store (LRS)
• PHP Mysql basic starter script for LRS
• Tutorial to build TinCanAPI LRS
• TinCanAPI Learning Record Store Script

Using Raw JavaScript:

Removing a class

 var id='myElementId';
 var myClassName=" className"; //must keep a space before class name
 var d;
 d=document.getElementById(id);
 d.className=d.className.replace(myClassName,"");

Adding a class

var id='myElementId';
var myClassName=" className"; //must keep a space before class name
var d;
d=document.getElementById(id);
d.className=d.className.replace(myClassName,""); // first remove the class name if that already exists
d.className = d.className + myClassName; // adding new class name

Using jQuery:

Adding a class

jQuery("#myElementId").addClass('className');

Removing a class

jQuery("#myElementId").removeClass('className');

Remove one class and add another new class at once

jQuery("#myElementId").removeClass('className').addClass('newClass');

Remove one more class at once

jQuery("#myElementId").removeClass('className1 className2');

If you think this codes are helpful to you then don’t forget to share this to others.

• Javascript function to Add a Class
• Using Javascript to add CSS class
• Javascript function to remove a class
• Remove a CSs class by javaScript
• JS code snippet to add/remove class
• jQuery function to add/remove any CSS class
• jQuery addClass function
• JQuery removeClass function
• Dinamically change style of an HTML element
• Change HTML Class attributes
• javascript add class to element
• javascript remove class
• Add/Remove Class with jquery function
• Adding a class to a .click function
• Add Remove CSS Class Using Fresh JavaScript Without jQuery

Do you know your WordPress site is being loaded multiple times for a single page visit? I am sure you don’t know. It is happening behind your eyes. A simple mistake of CSS style codes may increase your WordPress server usages and server may goes to slower down. In this article I will show you how a bad or old CSS code is harmful for your server.

You must know how WordPress handle not found file request. WordPress .htaccess handle all requests. At first it check the requested URL is a file/folder and is that exists or not. If the requested file/folder exists then server return the file/folder otherwise the server pass the request through WordPress script. Then WordPress generates a error page and return 404 HTTP Status code. To generate a 404 page WordPress loads its whole script, plugins and theme files. It means your server uses full resource to handle this 404 request.

Now I will explain the issue with mistake of CSS. You believe that a file size of a CSS is too smaller than your whole page size with HTML,JS and images. Your CSS file is few kilobytes in size. You also believe that CSS is used when HTML script calls it by class or ID and if any class or id are not called by HTML then this code is useless. Your browser read your full CSS file and try to load all resources called in CSS. We don’t delete unused CSS code form CSS file, we keep those for later usage. And a common mistake is we keep unused CSS codes in file but we delete unused images from images directory. It is the main problem. When you call web page , browser load the css file and load all images declared in this file. If any image is not exists server returns 404 error. Consider following mistake in my case. I was using some background images in my wordpress blog. For that backgrounds I had some style codes in style.css file. I decided to remove backgrounds. I deleted those images from images folder as I don’t want to using those but I did not remove the css codes from style.css

body{background:url(images/bg.png) #99CC33; }
 .loop_item{background:url(images/item_border.png) no-repeat #CCCCCC;}
 .title{background:url(images/titlebg.gif) repeat-x #eeeeee};
 #footer{background:url(images/footer.jpg) repeat-x #cccccc};

Above CSS codes load 4 images ( bg.png, item_border.png, titlebg.gif, footer.jpg).

For this reason for single page visit my WordPress is generating 4 not found 404 page using full resource of my server. It means my mistake increase my unwanted server cost 4 times. I tested many WordPress themes those have this same issue. Theme developers may do this mistake but as an webmaster you have to find out it. You have to be sure that in your CSS file there is no not found image.

I AM SURE YOU MUST HAVE THIS PROBLEM BEHIND YOUR EYES.

How can you check you are free or not free from this issue?

I made an WordPress Plugin WP Logs Book to check this issue. My plugin stores all 404 request information. Download and install my plugin from wordress.org . Active this plugin and visit your website. Go to dashboard and open wp-logs-book>Error 404 Log page . This log will show you the list of URLs those are not found in your website.