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Beyond the perimeter is everything considered potential enemy territory which is...literally everything other than the literal code executed by the current request.

All possible entrances and exits on the perimeter are guarded day and night by trigger happy sentries who prefer to shoot first and never ask questions.

This comprehensive course from Kevin Skoglund helps developers learn the basics of PHP (including variables, logical expressions, loops, and functions), understand how to connect PHP to a My SQL database, and gain experience developing a complete web application with site navigation, form validation, and a password-protected admin area.

Kevin also covers the basic CRUD routines for updating a database, debugging techniques, and usable user interfaces.

There is not much sense to put code right after a return, as a return finishes execution. Either you use if...elseif...elseif..without a return in them or a series of ifs each doing a return and then the final code without else.

The final code will only run, if no previous if did quit via return.

Each of these allies have their own perimeters which may or may not trust ours. As noted in the Introduction, we trust nothing and nobody.

Validating input is intended to prevent the entry of unsafe data into the web application.After some research I found that a server side php script would be better. This wasn't meant literally, but simply indicate further code.This is what was suggested: This is the link to the test site : tried modifying the code above but i get an error in line 5; as you can see if you test the form. Hi rasta IT34,there is a semicolon missing at the end of echo. Either you are hinting there is more code instead of the three dots, or it's an error, too. Besides that it doesn't make sense to have only one else after a series of ifs.(The tutorials will work with any version of PHP and covers any differences you might encounter).The author has also added updated installation instructions for Mac OS X Mountain Lion and Windows 8.For PHP references see here: Besides me not posting double signature, you may not want to display identical error messages to your users.Each echo should indicate what field is not correct.Along the way, he provides practical advice, offers examples of best practices, and demonstrates refactoring techniques to improve existing code.A: The old version of this course was 6 years old and it was time for a complete revision, using PHP 5.4.Even where we do appear to have gotten it down, we’ll need to be concious of the following considerations.You should bear these in mind whenever implementing custom validators or adopting a 3rd party validation library.


  1. Download and upload the PHP validation script validation.php to your web server and include or require that file via PHP in your form page.

  2. Validating input is intended to prevent the entry of. input into a form might include a. Input validation is frequently accompanied by a.

  3. JavaScript Form Validation - Learn Javascript in simple and easy steps. A beginner's tutorial containing complete knowledge of Javascript Syntax Objects Embedding.

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