PHP and MySQL Web Development 4th Ed-tqw-_darksiderg

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Implementing User Authentication 589 Figure 27.7 The change_passwd_form.php script supplies a form where users can change their passwords. This form is generated by the script change_passwd_form.php.This simple script just uses the functions from the output library, so we did not include the source for it here. When this form is submitted, it triggers the change_passwd.php script, which is shown in Listing 27.15. Listing 27.15 change_passwd.php—This Script Changes a User Password
590 Chapter 27 Building User Authentication and Personalization Listing 27.15 Continued if ($new_passwd != $new_passwd2) { throw new Exception('Passwords entered were not the same. Not changed.'); } if ((strlen($new_passwd) > 16) || (strlen($new_passwd) < 6)) { throw new Exception('New password must be between 6 and 16 characters. Try again.'); } // attempt update change_password($_SESSION['valid_user'], $old_passwd, $new_passwd); echo 'Password changed.'; } catch (Exception $e) { echo $e->getMessage(); } display_user_menu(); do_html_footer(); ?> This script checks that the user is logged in (using check_valid_user()), that she’s filled out the password form (using filled_out()), and that the new passwords are the same and the right length. None of this is new. If all that goes well, the script will call the change_password() function as follows: change_password($_SESSION['valid_user'], $old_passwd, $new_passwd); echo 'Password changed.'; This function is from the user_auth_fns.php library, and the code for it is shown in Listing 27.16. Listing 27.16 change_password()Function from user_auth_fns.php—This Function Updates a User Password in the Database function change_password($username, $old_password, $new_password) { // change password for username/old_password to new_password // return true or false // if the old password is right // change their password to new_password and return true // else throw an exception login($username, $old_password); $conn = db_connect(); $result = $conn->query("update user
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PHP and MySQL ® Web Development Fo
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PHP and MySQL ® Web Development, F
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Contents at a Glance Introduction 1
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Table of Contents Introduction 1 I
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xii Contents Writing to a File 67 P
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xiv Contents Comparing Strings 119
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xvi Contents Overriding 170 Prevent
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xviii Contents Looking at the Datab
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xx Contents Using Indexes 305 Using
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xxii Contents Firewalls 357 Data Ba
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xxiv Contents 18 Implementing Secur
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xxvi Contents 22 Generating Images
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xxviii Contents Using a Standard Di
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xxx Contents Implementing Payment 6
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xxxii Contents Using an Existing Sy
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xxxiv Contents Learning More about
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Acknowledgments We would like to th
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Introduction WELCOME TO PHP AND MYS
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Introduction 3 PHP is an Open Sourc
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Introduction 5 Using the Open Datab
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Introduction 7 installing it for ma
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Introduction 9 What Is New in MySQL
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I Using PHP 1 PHP Crash Course 2 St
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14 Chapter 1 PHP Crash Course n n n
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16 Chapter 1 PHP Crash Course Listi
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18 Chapter 1 PHP Crash Course Bob
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20 Chapter 1 PHP Crash Course Notic
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22 Chapter 1 PHP Crash Course Figur
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24 Chapter 1 PHP Crash Course n Lon
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28 Chapter 1 PHP Crash Course Under
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30 Chapter 1 PHP Crash Course This
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32 Chapter 1 PHP Crash Course n n n
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34 Chapter 1 PHP Crash Course You s
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36 Chapter 1 PHP Crash Course If th
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38 Chapter 1 PHP Crash Course Logic
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40 Chapter 1 PHP Crash Course Or, e
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44 Chapter 1 PHP Crash Course We ge
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46 Chapter 1 PHP Crash Course Refre
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48 Chapter 1 PHP Crash Course If yo
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54 Chapter 1 PHP Crash Course Listi
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56 Chapter 1 PHP Crash Course A do.
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2 Storing and Retrieving Data NOW T
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Opening a File 61 The form field fo
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Opening a File 63 In a Unix environ
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Opening a File 65 Remember that the
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Writing to a File 67 Figure 2.3 Usi
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Closing a File 69 Listing 2.1 order
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Reading from a File 71 Listing 2.2
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Reading from a File 73 Knowing When
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Reading from a File 75 This line re
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Using Other Useful File Functions 7
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A Better Way: Database Management S
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3 Using Arrays THIS CHAPTER SHOWS Y
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Numerically Indexed Arrays 83 This
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Arrays with Different Indices 85 Th
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Array Operators 87 This line uses e
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Multidimensional Arrays 89 You can
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Multidimensional Arrays 91 Truck Pa
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Sorting Multidimensional Arrays 93
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Sorting Multidimensional Arrays 95
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Reordering Arrays 97 Listing 3.1 Co
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Loading Arrays from Files 99 Listin
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Loading Arrays from Files 101 part
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Performing Other Array Manipulation
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Performing Other Array Manipulation
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4 String Manipulation and Regular E
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Creating a Sample Application: Smar
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Formatting Strings 111 Figure 4.2 U
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Formatting Strings 113 Table 4.1 Ty
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Formatting Strings 115 Figure 4.3 A
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Joining and Splitting Strings with
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Comparing Strings 119 The length pa
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Matching and Replacing Substrings w
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Introducing Regular Expressions 123
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Finding Substrings with Regular Exp
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Next 131 Note In general, the regul
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134 Chapter 5 Reusing Code and Writ
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160 Chapter 6 Object-Oriented PHP U
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162 Chapter 6 Object-Oriented PHP I
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164 Chapter 6 Object-Oriented PHP S
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166 Chapter 6 Object-Oriented PHP H
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168 Chapter 6 Object-Oriented PHP f
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170 Chapter 6 Object-Oriented PHP c
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172 Chapter 6 Object-Oriented PHP I
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174 Chapter 6 Object-Oriented PHP }
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176 Chapter 6 Object-Oriented PHP T
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178 Chapter 6 Object-Oriented PHP L
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180 Chapter 6 Object-Oriented PHP L
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182 Chapter 6 Object-Oriented PHP o
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184 Chapter 6 Object-Oriented PHP U
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186 Chapter 6 Object-Oriented PHP F
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7 Error and Exception Handling IN T
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The Exception Class 195 In Listing
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User-Defined Exceptions 197 Listing
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Exceptions in Bob’s Auto Parts 19
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Exceptions in Bob’s Auto Parts 20
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Next 203 pression operator. If it f
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8 Designing Your Web Database NOW T
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Relational Database Concepts 209 Co
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Designing Your Web Database 211 Rel
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Designing Your Web Database 213 Ord
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Designing Your Web Database 215 Thi
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Web Database Architecture 217 Brows
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9 Creating Your Web Database IN THI
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Logging In to MySQL 221 we have use
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Introducing MySQL’s Privilege Sys
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Creating Database Tables 229 Go ahe
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Creating Database Tables 231 Listin
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Creating Database Tables 233 The bo
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Understanding MySQL Identifiers 235
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Choosing Column Data Types 237 For
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Choosing Column Data Types 239 Tabl
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Next 241 Table 9.10 TEXT and BLOB T
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244 Chapter 10 Working with Your My
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11 Accessing Your MySQL Database fr
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How Web Database Architectures Work
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Querying a Database from the Web 27
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Putting New Information in the Data
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Putting New Information in the Data
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Using Prepared Statements 281 Let
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Using Other PHP-Database Interfaces
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Next 285 The advantages of using MD
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288 Chapter 12 Advanced MySQL Admin
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13 Advanced MySQL Programming IN TH
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Transactions 313 applications such
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Foreign Keys 315 You should see the
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Stored Procedures 317 changes the e
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Stored Procedures 319 or drop funct
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Stored Procedures 321 action specif
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Next 323 +------+ | @l | +------+ |
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14 Running an E-commerce Site THIS
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Considering the Types of Commercial
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Understanding Risks and Threats 337
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Next 339 Evolving Governmental Poli
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342 Chapter 15 E-commerce Security
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16 Web Application Security IN THIS
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Identifying the Threats We Face 363
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Understanding Who We’re Dealing W
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Securing Your Code 367 the security
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Securing Your Code 369 However, the
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Securing Your Code 371 if (!checkda
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Securing Your Code 373 Consider the
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Securing Your Code 375 Although thi
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Securing Your Code 377 n n Have you
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Securing Your Web Server and PHP 37
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Securing Your Web Server and PHP 38
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Database Server Security 383 n Look
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Protecting the Network 385 Internet
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Computer and Operating System Secur
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Disaster Planning 389 hosted burned
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17 Implementing Authentication with
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Implementing Access Control 393 Fig
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Implementing Access Control 395 Lis
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Implementing Access Control 397 Lis
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Using Basic Authentication 399 Look
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Using Basic Authentication in PHP 4
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Using Basic Authentication with Apa
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Using Basic Authentication with Apa
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Using mod_auth_mysql Authentication
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18 Implementing Secure Transactions
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Providing Secure Transactions 411 N
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Using Secure Sockets Layer (SSL) 41
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Using Secure Sockets Layer (SSL) 41
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Providing Secure Storage 417 Screen
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Using Encryption in PHP 419 Storing
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Using Encryption in PHP 421 If you
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Using Encryption in PHP 423 and cre
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Using Encryption in PHP 425 Listing
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Further Reading 427 The script you
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IV Advanced PHP Techniques 19 Inter
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432 Chapter 19 Interacting with the
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452 Chapter 20 Using Network and Pr
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470 Chapter 21 Managing the Date an
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22 Generating Images ONE OF THE USE
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Understanding Image Formats 485 JPE
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Creating Images 487 Figure 22.1 The
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Creating Images 489 It takes as par
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Using Text and Fonts to Create Imag
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Drawing Figures and Graphing Data 4
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Further Reading 507 Listing 22.5.4
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23 Using Session Control in PHP IN
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Understanding Basic Session Functio
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Implementing Simple Sessions 513 Re
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Creating a Simple Session Example 5
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Implementing Authentication with Se
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24 Other Useful Features SOME USEFU
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Serializing Variables and Objects 5
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Temporarily Altering the Runtime En
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Using PHP on the Command Line 531 h
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V Building Practical PHP and MySQL
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536 Chapter 25 Using PHP and MySQL
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640 Chapter 28 Building a Shopping
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652 Chapter 29 Building a Web-Based
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688 Chapter 30 Building a Mailing L
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742 Chapter 31 Building Web Forums
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772 Chapter 32 Generating Personali
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33 Connecting to Web Services with
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Project Overview: Working with XML
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Project Overview: Working with XML
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Solution Components 813 If you woul
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Solution Overview 815 Caching As we
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Solution Overview 817 Although it d
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Solution Overview 819 Figure 33.5 B
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Solution Overview 821 Listing 33.3
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Solution Overview 823 Let’s work
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Solution Overview 825 if(!eregi('^[
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Solution Overview 839 data, but bec
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Solution Overview 845 Using SOAP to
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Solution Overview 847 } if($type ==
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Solution Overview 849 in memory. No
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Installing the Project Code 853 for
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34 Building Web 2.0 Applications wi
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What Is Ajax? 857 n Other common me
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What Is Ajax? 859 display the h1 te
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Fundamental Ajax 861 Note For secur
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Fundamental Ajax 863 function getSe
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Fundamental Ajax 865 The next step
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Fundamental Ajax 867 Listing 34.3 C
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Fundamental Ajax 869 Figure 34.2 Th
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Adding Ajax Elements to Earlier Pro
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For More Information 885 Some popul
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A Installing PHP and MySQL APACHE,
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Installing Apache, PHP, and MySQL U
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B Web Resources THIS APPENDIX LISTS
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Apache Resources 909 The PHP Resour
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Index SYMBOLS ! (logical operator),
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array_count_values() function 913 c
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ottom.php files (Tahuayo applicatio
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collapsing threads (Web forum appli
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CVS (Concurrent Versions System) 91
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date and time 921 user table, 289 W
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downloading 923 directories browsin
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escaping characters 925 reading, 45
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files 927 FILE privilege, 226-227,
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functions 929 foreign keys database
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functions 931 escapeshellcmd(), 378
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functions 933 prototypes, 144 puten
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images 935 hardware failure (commer
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keys 937 INSERT statement, 244 inse
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MaxClients parameter (Apache) 939 l
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mysqli_query() function 941 multidi
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operators 943 O Object data type (v
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PHP 945 paths absolute, 62 file, 44
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php.ini file 947 gethostbyaddr(), 4
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purchase.php script (Shopping Cart
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eturning 951 Perl, 123 slash (\), 1
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security 953 buttons, calling, 493
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Shopping Cart application 955 Warm
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statements 957 special characters l
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tab control sequence (\t) 959 print
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time and date 961 limitations, 79 l
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usort() function 963 UPDATE privile
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Web databases 965 views, File Detai
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word processor formats 967 JPEG (Jo
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What’s on the CD? The book’s co
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