By W Jason Gilmore
No subject what language you're accustomed to, this booklet will profit you. starting with a speedy advent to PHP's syntax and uncomplicated performance, you are going to rapidly comprehend personal home page. The e-book then steers you towards complex concerns, like PHP's position in database manipulation, classes, and consumer interactivity.
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Extra info for A programmer's introduction to PHP 4.0
So far, the appliance isn't very functional. There is only one characteristic: power. This characteristic can be modified by using the method set_power. Remember, however, that a class definition is a template and cannot itself be manipulated. Instead, objects are created based on this template. This is 58 accomplished via the new keyword. Therefore, in the preceding listing an object of class appliance named blender is created. The blender power can then be set by making use of the method set_power: $blender->set_power("on"); Object-oriented programming is such an important strategy in today's application development standards that its use with PHP merits its own chapter.
Character Handling Strings can be accessed on a character-by-character basis, much like a sequentially indexed array. ) An example follows: $sequence_number = "04efgh"; $letter = $sequence_number; The variable $letter will hold the value g. As you will learn in the next section, PHP begins array position counts from 0. To illustrate this further, consider the fact that $sequence_number would hold the value 4. 54 Arrays An array is a list of elements each having the same type. There are two types of arrays: those that are accessed in accordance with the index position in which the element resides, and those that are associative in nature, accessed by a key value that bears some sort of association with its corresponding value.
Regardless of the Web server you intend to use, I strongly recommend reading through the configuration sections later in this chapter to gain some insight into the generalized configuration issues that you may encounter. Installation of new software can sometimes prove to be a daunting process for newcomers. However, the PHP developers have taken extra steps to make PHP installation relatively easy. The following sections highlight the steps you should take to install and configure PHP on both the non-Windows and the Win32 platforms.