Category: 12. PHP

PERL is a dynamically typed, high level and general-purpose programming language. It is normally believed that PERL is an acronym for Practical Extraction and Reporting Language. PHP on the other hand is also a general-purpose scripting language. Initially PHP used to be a short for Personal Home Page’, but these days it has now been…

If you have a prior knowledge of C programming, learning PHP becomes a lot easier, especially the basics. Although PHP is a lot like C, it is bundled with a whole lot of Web-specific libraries, with everything hooked up directly to your favorite Web server. The simplest way to think of PHP is as interpreted…

A bug in a PHP code refers to an error in the program that leads to unexpected results or crash. A systematic approach towards the process of finding bugs before users do is called debugging. In this chapter, some important tips to trace bugs in a PHP code are given. Programs rarely work correctly the…

In PHP, the keywords try, catch, throw and finally are provided to deal with exceptions. Whereas an Error is an unexpected program result, which cannot be handled by the program itself and the program has to be terminated with die() or setting a custom error handler. On the other hand, an exception refers to an unexpected situation which can…

Error handling in PHP refers to the making a provision in PHP code to effectively identifying and recovering from runtime errors that the program might come across. In PHP, the errors are handled with the help of − The die() Function The die() function is an alias of exit() in PHP. Both result in termination…

Regular expressions are nothing more than a sequence or pattern of characters itself. They provide the foundation for pattern-matching functionality. Using regular expression you can search a particular string inside a another string, you can replace one string by another string and you can split a string into many chunks. PHP offers functions specific to…

Every company follows its own coding standard based on its best practices. Coding standard is required because there may be many developers working on different modules so if they will start inventing their own standards then source will become very un-manageable and it will become difficult to maintain that source code in future. Here are…

In PHP, the term Array destructuring refers to the mechanism of extracting the array elements into individual variables. It can also be called unpacking of array. PHP’s list() construct is used to destrucrure the given array assign its items to a list of variables in one statement. As a result, val1 is assigned to $var1, val2 to $var2 and so on.…

On installing PHP software on your machine, php.ini is created in the installation directory. In case of XAMPP, php.ini is found in c:\xamm\php folder. It is an important configuration file that controls the performance and sets all the PHP related parameters. The phpinfo() function displays a list of different parameters and their current values of…

PHP will work with virtually all database software, including Oracle and Sybase but most commonly used is freely available MySQL database. What you should already have ? We have divided this chapter in the following sections −