PHP Quick Scripting Reference
Mikael Olsson
Language: English
Pages: 120
ISBN: B010DTEVYI
Format: PDF / Kindle (mobi) / ePub
The PHP Quick Scripting Reference is a condensed scripting code and syntax reference to the PHP scripting language, the most popular Web scripting language in use today. It presents the essential PHP script in a well-organized format that can be used as a handy reference.
You won’t find any technical jargon, bloated samples, drawn out history lessons or witty stories in this book. What you will find is a Web scripting language reference that is concise, to the point and highly accessible. The book is packed with useful information and is a must-have for any PHP programmer or Web developer
In the PHP Quick Scripting Reference, you will find:
* A concise reference to the PHP scripting language syntax.
* Short, simple and focused code examples.
* A well laid out table of contents and a comprehensive index allowing easy review.
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installed. An easy way to set up a PHP environment is to download and install a distribution of the popular Apache web server called XAMPP,2 which comes pre-installed with PHP, Perl and MySQL. This will allow you to experiment with PHP on your own computer. After installing the web server point your browser to “http://localhost” to make sure that the server is online. It should display the file index.php, which by default is located under “C:\xampp\htdocs\index.php” on a Windows machine. Htdocs
used to send the data the $_REQUEST array can be used. This array typically contains the $_GET and $_POST arrays, but may also contain the $_COOKIE array. echo $_REQUEST['myString']; // "Foo Bar" The content of the $_REQUEST array can be set in the PHP configuration file1 and varies between PHP distributions. Due to security concerns, the $_COOKIE array is usually not included. Security concerns Any user-provided data can be manipulated and should therefore be validated and sanitized before
functions.................................................................................... 29 Function parameters ............................................................................. 30 Default parameters ............................................................................... 30 Variable parameter list .......................................................................... 31 Return statement ..................................................................................
..................................................................................................... 74 Determining types ................................................................................. 75 Variable information .............................................................................. 76 N Chapter 21: Overloading ............................................................... 77 Property overloading
arithmetic operators. $x=5; $x=5; $x=5; $x=5; $x=5; $x $x $x $x $x &= 4; |= 4; ^= 4; <<= 1; >>= 1; // // // // // 101 101 101 101 101 & 100 | 100 ^ 100 << 1 >> 1 = 100 = 101 = 001 =1010 = 10 (4) // (5) // (1) // (10)// (2) // and or xor left shift right shift Operator precedence In PHP, expressions are normally evaluated from left to right. However, when an expression contains multiple operators, the precedence of those operators decides the order in which they are evaluated. 11