PHP by Example - download pdf or read online

By Toby Butzon

ISBN-10: 0789725681

ISBN-13: 9780789725684

Hypertext Preprocessor by way of instance is an instance of a reasonably usual programming ebook. i actually did not take care of this one a lot in any respect and pretty well have by no means entire it, different assets as a substitute while invaluable. I certainly do not suggest getting this one, until it really is in a cut price bin or someplace like that.

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Additional info for PHP by Example

Sample text

If a cast is made to an object, an object is created with a member variable called scalar that contains the value of the variable before it was cast. Casts of this sort are uncommon and doing so is discouraged. Necessity of Type Casting It’s not usually necessary to typecast a variable. Most of PHP’s functions will do this for you; PHP is said to handle types automatically. Thus, type casting comes in handy occasionally for things such as converting from integers to doubles. It isn’t something you’ll use a lot, but when you do use it, it’s a lot quicker and easier than any other method would be.

Php and try again. A “PARSE ERROR” MESSAGE APPEARS This message, mentioned briefly before, means PHP doesn’t know how to interpret something inside of the PHP tags. This isn’t at all uncommon. For the example shown previously, it probably means you mistyped something. Go back and check to make sure the files match exactly, line for line. Check to ensure that the same quotes are used (double quotes are not the same as two single quotes). What’s Next 27 The parse error will be accompanied by a helpful message explaining exactly why your program isn’t running.

THE PHP CODE APPEARS DIRECTLY IN THE BROWSER This is because you entered the code into a WYSIWYG editor such as FrontPage or DreamWeaver. php). php in your browser, if you look at the source code (using your browser’s View Source command), you will notice that the version with the special character codes is used. To correct this, enter the code in a text-only editor, such as Notepad or PHPEd. ) A “404 FILE NOT FOUND” OR “CGI ERROR” MESSAGE APPEARS The first of these may seem obvious, but it’s not always so obvious if you use Notepad to create your PHP file.

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PHP by Example by Toby Butzon


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