New PDF release: Core PHP Programming
By Leon Atkinson
Middle Hypertext Preprocessor Programming, 3rd variation is the authoritative advisor to the hot Hypertext Preprocessor five for knowledgeable builders. most sensible Hypertext Preprocessor developer Leon Atkinson and personal home page five contributor/Zend Engine 2 co-creator Zeev Suraski hide each side of real-world Hypertext Preprocessor five improvement, from easy syntax to complicated item - orientated development-even layout patterns!It's all the following: networking, info buildings, ordinary expressions, math, configuration, portraits, MySQL/PostgreSQL help, XML, algorithms, debugging, optimization...and 650 downloadable code examples, with a Foreword through Hypertext Preprocessor five contributor and Zend Engine 2 co-creator Andi Gutmans!
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Additional info for Core PHP Programming
When used with other types of values, such as a string, PHP first converts them to numeric value and then performs the operation. The result type of an arithmetic expression can be either an integer or a floating-point number. PHP determines the result type based on whether a decimal point is necessary to describe the result or not. This is unlike strict-typed languages such as C that determine the result based only on the operand types. 6 displays the arithmetic operators. 9 demonstrates their use.
N"); //Greet Zeev again print <<< EOD Hello again, $name! How is it going? > Freeing Memory PHP applications, like any kind of computer applications, consume memory. PHP uses some memory for internal purposes. Some memory stores the data that you work with in your application, mostly in variables. Typically, PHP applications consume small amounts of memory, so you don't have to worry about conserving memory. During the course of execution, PHP does its best to determine which memory pieces are no longer in use and frees them automatically for reuse by other parts of the script.
Generally, these are called escape sequences. Strings in double quotes may contain variables and additional escape sequences. PHP replaces references to variables with their values. 1 contains escape sequences recognized by PHP. 1. Escape Sequences Code \" \\ 32 Description Double quotes Backslash character Part I: Programming with PHP Part I: Programming with PHP 33 New line Carriage return \t Horizontal tab \x00 - \xFF Hex characters Borrowing from UNIX shells, PHP also allows what are sometimes called HERE docs.
Core PHP Programming by Leon Atkinson