Download PHP: The Good Parts: Delivering the Best of PHP by Peter MacIntyre PDF

By Peter MacIntyre

Get prior all of the hype approximately personal home page and dig into the true energy of this language. This publication explores the main worthwhile positive factors of personal home page and the way they could accelerate the net improvement strategy, and explains why the main typical Hypertext Preprocessor parts are usually misused or misapplied. You'll research which elements upload power to object-oriented programming, and the way to exploit definite good points to combine your software with databases.

Written via an established member of the personal home page group, PHP: the nice Parts is perfect for brand spanking new personal home page programmers, in addition to internet builders switching from different languages.
* familiarize yourself with PHP's easy syntax, variables, and datatypes
* how to combine the language with web content
* know the way to exploit strings, arrays, and PHP's integrated services
* notice the benefits of utilizing Hypertext Preprocessor as an object-oriented language
* discover how Hypertext Preprocessor interacts with databases, corresponding to SQLite and MySQL
* examine enter- and output-handling top practices to avoid safeguard breaches

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Extra resources for PHP: The Good Parts: Delivering the Best of PHP

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Functions can accept values that are passed to them (parameters) and they can also return values, as we mentioned. 27 It is generally a best practice to have one way “into” a function—by calling it, as above—and one way “out” of it—by having it complete its defined work and either return a value or not. It is not good practice to have conditional return statements within a function, because, at the very least, it adds unnecessary complexity and is therefore more difficult to troubleshoot and debug.

Statement. You can use this decision-making construct in situations where there are many possible values. The syntax is as follows: switch (value being tested) { case first possible value: // run some code [break;] case 2nd possible value: // run some code [break;] default: // if nothing else is true, do this } This syntax looks a little convoluted, but once you understand its logic it really does make sense. The value within the brackets is the item being tested, followed by each value for the case that you want to evaluate.

This means that the arrays are loaded and created in GET, POST, and COOKIE order, with the latter elements taking precedence over the former if they are similarly named. The “G” stands for GET, the “P” for POST, and the “C” is for cookie. ini file and restart your server. The array represented by that letter will not be created in the superglobal space on the web server. Integration with Web Pages | 25 CHAPTER 3 Functions (Doing It Once) PHP uses functions, much like any other programming language, and it certainly is to your advantage to get to know how to make the most of them.

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