PHP Pocket Reference, 2nd Edition by Rasmus Lerdorf

By Rasmus Lerdorf

Simple, to the purpose, and compact--in truth, precisely what you will have come to anticipate in an O'Reilly Pocket Reference--the moment version of PHP Pocket Reference is punctiliously up-to-date to incorporate the specifics of Hypertext Preprocessor 4.

Written by way of the founding father of the personal home page venture, Rasmus Lerdorf, PHP Pocket Reference is either a convenient creation to personal home page syntax and constitution, and a brief connection with the titanic array of features supplied through Hypertext Preprocessor. the short reference part organizes all of the center services of Hypertext Preprocessor alphabetically so that you can locate what you wish simply; the slender dimension ability you could hold it convenient beside your keyboard for these instances for those who are looking to lookup a functionality fast with out final what you are doing.

This precious little ebook presents an authoritative evaluation of Hypertext Preprocessor packed right into a pocket-sized advisor that is effortless to take wherever. it's also definitely the right significant other for O'Reilly's accomplished booklet on Hypertext Preprocessor, Programming PHP.

The PHP Pocket Reference an vital (and reasonably cheap) instrument for any severe personal home page coder.

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Additional info for PHP Pocket Reference, 2nd Edition

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A function call is an expression that has a value; its value is the returned value from the function. PHP provides a large number of internal functions. The "Function Reference" section lists all of the commonly available functions. PHP also supports user-definable functions. To define a function, use the function keyword. For example: function soundcheck($a, $b, $c) { return "Testing, $a, $b, $c"; }When you define a function, be careful what name you give it. In particular, you need to make sure that the name does not conflict with any of the internal PHP functions.

Php. Note the use of the $_SESSION superglobal. If you have register_globals on, you would be able to access these as $foo and $bar directly. You can add complex variables such as arrays and objects to sessions as well. The one caveat with putting an object in a session is that you must load the class definition for that object before you call session_start( ). A common error people make when using sessions is that they tend to use it as a replacement for authentication -- or sometimes as an add-on to authentication.

This expression is checked prior to each iteration. The third expression, the iterative expression, is evaluated at the end of each iteration and is typically used to increment the loop counter. With the first form of the for statement, you can omit the braces if you only need to execute a single statement. The break and continue statements work with a for loop like they do with a while loop, except that continue causes the iterative expression to be evaluated before the loop conditional expression is checked.

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