Core Web Application Development With PHP And MYSQL by Marc Wandschneider PDF

By Marc Wandschneider

ISBN-10: 0131867164

ISBN-13: 9780131867161

This can be a accomplished, useful advisor for programmers who are looking to increase production-quality, database-enabled internet functions with Hypertext Preprocessor and MySQL. Long-time developer Marc Wandschneider systematically addresses the full method: not just coding, but additionally prematurely program, person interface and database layout, PLUS defense, checking out, and more.You'll stroll via development 3 purposes from begin to end: a calendaring approach, a web publication engine, and an e-commerce shop. alongside the way in which, you will grasp crucial thoughts for growing powerful internet database purposes and the best way to stay away from the typical pitfalls that journey up many builders relocating to personal home page and MySQL. * begins with an entire primer on personal home page for developers"including insurance of code association, reuse, and object-oriented Hypertext Preprocessor * includes specific remedies of knowledge entry, together with transactions, overseas keys, and indexes * provides robust info validation strategies using Hypertext Preprocessor average expressions * Walks via making plans net functions, together with consumer interfaces and person administration * deals systematic suggestions on securing internet purposes from finish to finish * Covers a variety of implementation issues"including internationalization, blunders dealing with, information validation, debugging, consultation administration, and deployment * contains special chapters on XML, XML-based internet companies, and the PEAR framework for reusable Hypertext Preprocessor elements * exhibits how one can paintings with the Oracle and PostgreSQL databases"

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Next, we will show more examples and discuss the specifics of these conversions. Part I: The Basics of PHP 35 36 Part I: The Basics of PHP Specific Type Conversions The exact way in which variables or expressions of one type are converted to another is not always obvious, so we will now discuss the key type conversions that PHP will perform. You are encouraged to be a bit cautious when doing conversions and to verify the results carefully to make sure that what you expect to happen actually does.

They always evaluate to a Boolean value and indicate the result of the comparison, as follows: Operator Example Description == $a == $b Equality: This returns TRUE whether the two operands have the same value or not. === $a === $b Identity: This evaluates to trUE if the two operands have the same value and are the same type. = $b Inequality: This evaluates to trUE if the two operands do not have the same value. <> $a <> $b Inequality: This evaluates to TRUE if the two operands do not have the same value.

Operator is the result of evaluating expression3. 5; $shipping_time = ($shipping_weight < 10) ? 48 : 72; // a customs form is required since destination isn't USA. = "USA") ? = "USA"; And it would behave the same. However, we typically opt for explicitness in this book, to make code clearer and help reduce chances for confusion. Logical Operators A set of operators that you will commonly use are the logical operators, which let you compare the results of two expressions. Operator Example Description and $a and $b And: This returns trUE if both operands evaluate to trUE.

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Core Web Application Development With PHP And MYSQL by Marc Wandschneider


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