ZEND PHP 5 Certification STUDY GUIDE

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CONTENTS ” ix Class Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Interfaces & Abstract Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Determining An Object’s Class . . . . . . . . . . . . . . . . . . . . . . . . 128 Exceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 The Basic Exception Class . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Throwing Exceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 Lazy Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Reflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Chapter 7 — Database Programming 141 An Introduction to Relational Databases and SQL . . . . . . . . . . . . . . . . 141 Indices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Relationships . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 SQL Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Creating Databases and Tables . . . . . . . . . . . . . . . . . . . . . . . . 145 Creating Indices and Relationships . . . . . . . . . . . . . . . . . . . . . 146 Dropping Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Adding and Manipulating Data . . . . . . . . . . . . . . . . . . . . . . . . 148 Removing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Retrieving Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 SQL Joins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Outer Joins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 Advanced Database Topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Transactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Prepared Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Working With Databases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 <strong>PHP</strong> Data Objects (PDO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 MySQL Improved Extension (mysqli) . . . . . . . . . . . . . . . . . . . . 162 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 Licensed to 482634 - Amber Barrow (itsadmin@deakin.edu.au) Chapter 8 — Elements of Object-oriented Design 171 Design Pattern Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 The Singleton Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
x ” CONTENTS The Factory Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 The Registry Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 The Model-View-Controller Pattern . . . . . . . . . . . . . . . . . . . . . 175 The ActiveRecord Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 The Standard <strong>PHP</strong> Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 Accessing Objects as Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Simple Iteration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Seekable Iterators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Recursive Iteration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Filtering Iterators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 Chapter 9 — XML and Web Services 185 The Extensible Markup Language (XML) . . . . . . . . . . . . . . . . . . . . . 186 Creating an XML Document . . . . . . . . . . . . . . . . . . . . . . . . . . 188 SimpleXML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 Parsing XML Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 Accessing Children and Attributes . . . . . . . . . . . . . . . . . . . . . . 192 XPath Queries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 Modifying XML Documents . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Working With Namespaces . . . . . . . . . . . . . . . . . . . . . . . . . . 196 DOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Loading and Saving XML Documents . . . . . . . . . . . . . . . . . . . . 198 XPath Queries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 Modifying XML Documents . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Moving Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201 Modifying Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 Removing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 Working With Namespaces . . . . . . . . . . . . . . . . . . . . . . . . . . 204 Interfacing with SimpleXML . . . . . . . . . . . . . . . . . . . . . . . . . . 205 Web Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 SOAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 Accessing SOAP-based Web Services . . . . . . . . . . . . . . . . . . . . . 207 Debugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 Licensed to 482634 - Amber Barrow (itsadmin@deakin.edu.au)
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Page 7 and 8: vi ” CONTENTS Operators . . . . .
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