query_posts() is overly simplistic and problematic way to modify main query of a page by replacing it with new instance of the query. It is inefficient (re-runs SQL queries) and will outright fail in some circumstances (especially often when dealing with posts pagination). Any modern WP code should use more reliable methods, like making use ofpre_get_postshook, for this purpose. TL;DR don’t use query_posts() ever;
get_posts() is very similar in usage and accepts same arguments (with some nuances, like different defaults), but returns array of posts, doesn’t modify global variables and is safe to use anywhere;
WP_Query class powers both behind the scenes, but you can also create and work with own object of it. Bit more complex, less restrictions, also safe to use anywhere.
Here are some highlights of the changes that jQuery 2.0 brings:
No more support for IE 6/7/8: Remember that this can also affect IE9 and even IE10 if they are used in their “Compatibility View” modes that emulate older versions. To prevent these newer IE versions from slipping back into prehistoric modes, we suggest you always use an X-UA-Compatible tag or HTTP header. If you can use the HTTP header it is slightly better for performance because it avoids a potential browser parser restart.
Reduced size: The final 2.0.0 file is 12 percent smaller than the 1.9.1 file, thanks to the elimination of patches that were only needed for IE 6, 7, and 8. We had hoped to remove even more code and increase performance, but older Android/WebKit 2.x browsers are now the weakest link. We’re carefully watching Android 2.x market share to determine when we can cross it off the support list, and don’t expect it to take very long.
Custom builds for even smaller files: This feature has been greatly refined and extended since its debut in jQuery 1.8. You can now exclude combinations of 12 different modules to create a custom version that is even smaller. A new minimal selector engine, basically a thin wrapper around the browser’s querySelectorAll API, lets you shrink the build to less than 10KB when minified and gzipped. See the README for instructions on how to create a custom build, and remember that any plugins you use will also need to stick to the subset you select.
jQuery 1.9 API equivalence: jQuery 2.0 is API-compatible with 1.9, which means that all of the changes documented in thejQuery 1.9 Upgrade Guide have been applied to jQuery 2.0 as well. If you haven’t yet upgraded to jQuery 1.9, you may want to try that first. Be sure to use the jQuery Migrate plugin.
The full record of changes can be found in the changelog below, and in the list of commits on GitHub.
It is going to be pretty basic tutorial. I am gonna write the advanced or the other ones in the next tutorials. Here is a simple code in php which creates a image on the fly. This code is so simple,but i have written comment before each line to help you understand the flow of the code.
//creates a image handle
$img = imagecreate( 200, 200 );
//choose a bg color, u can play with the rgb values
$background = imagecolorallocate( $img,232, 0, 135 );
//chooses the text color
$text_colour = imagecolorallocate( $img, 255, 255, 255 );
//sets the thickness/bolness of the line
imagesetthickness ( $img, 3 );
//draws a line params are (imgres,x1,y1,x2,y2,color)
imageline( $img, 20, 130, 165, 130, $text_colour );
//pulls the value passed in the URL
$text = $_GET['days'];
// place the font file in the same dir level as the php file
$font = 'comic.ttf';
//this function sets the font size, places to the co-ords
imagettftext($img, 100, 0, 11, 120, $text_colour, $font, $text);
//places another text with smaller size
imagettftext($img, 16, 0, 10, 160, $text_colour, $font, 'Small Text');
//alerts the browser abt the type of content i.e. png image
header( 'Content-type: image/png' );
//now creates the image
imagepng( $img );
//destroys used resources
imagecolordeallocate( $text_color );
imagecolordeallocate( $background );
imagedestroy( $img );
The jQuery Cycle Plugin is a slideshow plugin that supports many different types of transition effects. It supports pause-on-hover, auto-stop, auto-fit, before/after callbacks, click triggers and much more. It also supports, but does not require, the Easing Plugin.
The plugin provides a method called cycle which is invoked on a container element. Each child element of the container becomes a “slide”. Options control how and when the slides are transitioned.
The Cycle Plugin provides many options for customizing your slideshow. The default option values can be overridden by passing an option object to the cycle method, by using metadata on the container element, or by redefining the values in your own code.
HMVC is an evolution of the MVC pattern used for most web applications today. It came about as an answer to the salability problems apparent within applications which used MVC. The solution presented in the JavaWorld web site, July 2000, proposed that the standard Model, View, and Controller triad become layered into a “hierarchy of parent-child MCV layers“. The image below illustrates how this works: