By Gina Cristanini Di Fidio, Wilma Strabello, Michèle Delagneau
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To cross the solar qualified Programmer for Java 2 Platform 1. four examination (SCPJ2 1. four) you wish this booklet. it truly is written for any skilled programmer (with or with out past wisdom of Java) drawn to gaining knowledge of the Java programming language and passing the SCPJ2 1. four examination. A Programmer's advisor to JavaT Certification, moment version, comprises specific insurance of all examination themes and pursuits, valuable code examples, routines, evaluate questions, and several other complete perform tests.
Das Buch bietet eine kompakte Einf? hrung in die Konzepte objektorientierter Programmierung. Es erl? utert das Objekt- und Klassenkonzept, beschreibt Kapselungstechniken und geht detailliert auf Subtyping und Vererbung ein. Software-Wiederverwendung in shape von Bibliotheksbausteinen und Programmger? sten (Frameworks) wird am Beispiel der Verarbeitung von Str?
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This is now generally regarded as bad practice, as it can make the job of understanding someone else’s code extremely difficult. htaccess file as follows: php_flag allow_call_time_pass_reference off Write Reusable Code It’s easy to say, I know, but if you find yourself writing any more than one PHP script, you need to start thinking about ways to make your code reusable, before 20 Write Reusable Code you suffer premature hair loss. Technically, this isn’t exactly an issue of portability as such, but if you end up working on other sites or applications, you’ll appreciate having ready code that you can simply plug into your new project.
How exactly you choose to store this information is a matter of personal choice. In some cases, it may be worth considering an XML file or storing some of the information in a database. It’s also worth being aware of the parse_ini_file function, which I’ll explore in Chapter 4. A simple but effective mechanism is to place all the settings in a single file as PHP constants, which makes them available from any function or class in your application. com'); // In another script echo 'The domain is ' .
If we include this at the start of any file in which we accept data from a query string, a form post, or a cookie, we’ll remove any slashes added by magic quotes, should this functionality be switched on. This effectively gives us back what we started with. ” in Chapter 3. If you’re not yet confident that you can protect yourself against SQL Injection attacks, use magic quotes. Once you’re happy you have a full grasp of all the issues, switch the magic quotes functionality off and save yourself many headaches.