On June 19th I will start to deliver a detailed professional course for cross platform web and mobile applications development. The course focuses on PHP for the server side and on JavaScript for the client side. The course includes 220 academic hours and it takes place in HIT. You can find detailed information about this [...]
The list construct in PHP allows us an easy assignment of values that belong to array into variabels in our code. The list construct is highly useful when developing code that works with a relational database. The following code sample shows a simple usage for the list construct. <?php $vec = [2=>"dave",1=>"ron",0=>"chen",3=>"ran"]; list($a,$b,$c) = $vec; [...]
The usort function allows us to specify the criteria by which the array will be sorted. The following code sample includes the definition of the class Student and the creation of an array that its values are references for objects instantiated from Student. Using the usort function we can sort the students according to their [...]
Zend Studio allows us to profile the code we write in PHP using an easy to use profiler it already includes. The following video clip shows how simple it is.
Using the Zend_Locale component we can represent different locales. Each locale is a combination of a language and a country. Usually we will set the default locale of our application during the execution of our bootstrap file. Zend_Locale::setDefault(‘he_IL’); There are various possible ways for using the Zend_Locale. The following code sample creates new Zend_Locale objects [...]
Using the Zend_Db_Table class, which is part of the Zend Framework, we can easily access a specific table in our database. The following code sample shows how simple it is to add a new row using this class. The following code includes our definition for the users controller. <?php require_once ROOT_DIR.’/models/Users.php’; class UsersController extends Zend_Controller_Action [...]
Defining a trait is very similar to defining a class. Instead of using the keyword class we use the keyword trait. The purpose of traits is to group functionality in a fine grained and consistent way. It is not possible to instantiate a trait. The trait servers as an additional capability that provides us with additional capabilities when [...]
As of PHP 5.4 we can create new arrays in a simple way. Simpler than ever. The following code sample shows that. <?php $vec_a = [4,6,2,7]; $vec_b = ['a'=>'australia','b'=>'belgium','c'=>'canada']; foreach($vec_a as $k=>$v) { echo ” “.$k.”=>”.$v; } foreach($vec_b as $k=>$v) { echo ” “.$k.”=>”.$v; } ?> The following video clip shows the execution of this [...]
As of PHP 5.4, the support for short tags exists by default. There is no need to introduce changes into php.ini in order to use the PHP short tags. <? $numA = 24; $numB = 4; ?> <h1><?=($numA+$numB)?></h1> The following video clip shows the execution of this code sample and explains it.
PHP 5.4 allows us to access class members on the instantiation. We will use this special capability in those rare cases in which the only reason for creating the object is in order to allow us to access one of the class members. <? class Utils { function calc($numA,$numB) { return $numA+$numB; } } $temp [...]
