By Andi Gutmans
During this e-book, Hypertext Preprocessor 5's co-creator and major PHPdevelopers aid you utilize personal home page 5's industrial-strengthenhancements in any undertaking - no matterhow huge or advanced. Their distinct insights and reasonable examples illuminatePHP 5's new item version, robust layout styles, greater XML internet servicessupport, and masses extra. no matter if you are developing internet purposes, extensions,packages, or shell scripts - or migrating personal home page four code - listed here are high-poweredsolutions you will not locate wherever else. * assessment PHP's syntax and grasp its object-oriented services - from houses and techniques to polymorphism, interfaces, and mirrored image * grasp the 4 most crucial layout styles for PHPdevelopment * Write strong net functions: deal with enter, cookies, sessionextension, and extra * combine with MySQL, SQLite, and different database engines * supply effective errors dealing with that is obvious on your clients * Leverage personal home page 5's superior XML help - together with parsing, XSLTconversions, and extra * construct XML-based net prone with XML-RPC and cleaning soap * utilize PEAR: paintings with the repository, use keypackages, and create your personal * improve Hypertext Preprocessor four code to Hypertext Preprocessor five - compatibility matters, techniques,and sensible workarounds * enhance script functionality: suggestions and instruments for personal home page optimization * Use personal home page extensions to deal with files/streams, normal expressions,dates/times, and pics * Create unique extensions and shell scriptsIf you are a software program developer new to personal home page, you are going to leapquickly into Hypertext Preprocessor and its new object-oriented services. in case you are anexperienced Hypertext Preprocessor programmer, you already realize PHP's comfort andsimplicity. Now, notice all of its awesome strength!
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Extra resources for PHP 5 Power Programming
Unary Operators Unary operators act on one operand. 7. $var (! is the operator, $var is the operand). Operator Name Value 51 52 ! Logical Negation true if the operand evaluates to false. False if the operand evaluates to true. ~ Bitwise Negation In case of a numeric operand, the bitwise negation of its bitwise representation (floating-point values are first converted to integers). In case of strings, a string of equal length, in which each character is the bitwise negation of its corresponding character in the original string.
Because Microsoft officially stopped supporting it in 2002, the PHP development community decided that dropping the support was a wise decision. 5. Summary You must surely be impressed by the amount of improvements in PHP 5. As previously mentioned, this chapter does not cover all the improvements, but only the main ones. Other improvements include additional features, many bug fixes, and a much-improved infrastructure. The following chapters cover PHP 5 and give you in-depth coverage of the named new features and others that were not mentioned in this chapter.
6. Operators PHP contains three types of operators: unary operators, binary operators, and one ternary operator. 1415 $i 1 These examples are also simple examples of expressions. PHP can only perform binary operations on two operands that have the same type. However, if the two operands have different types, PHP automatically converts one of them to the other's type, according to the following rules (unless stated differently, such as in the concatenation operator). Type of One of the Operands Type of the Other Conversion Performed Operand Integer Floating point Integer String The integer operand is converted to a floating point number.