ZEND PHP 5 Certification STUDY GUIDE

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Contents Foreword How To Use This Book Chapter 1 — PHP Basics 3 Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Source Files and PHP Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Newline Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Anatomy of a PHP Script . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Whitespace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Code Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Language Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Numeric Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Booleans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Compound Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Other Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Converting Between Data Types . . . . . . . . . . . . . . . . . . . . . . . 11 Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Variable Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Determining If a Variable Exists . . . . . . . . . . . . . . . . . . . . . . . . 14 Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 xv xvii Licensed to 482634 - Amber Barrow (itsadmin@deakin.edu.au)
vi ” CONTENTS Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 The String Concatenation Operator . . . . . . . . . . . . . . . . . . . . . 17 Bitwise Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Assignment Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Referencing Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Comparison Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Logical Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Other Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Operator Precedence and Associativity . . . . . . . . . . . . . . . . . . . 25 Control Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Conditional Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Iterative Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Breaking and Continuing . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Errors and Error Management . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Types of Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Error Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Handling Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Chapter 2 — Functions 37 Basic Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Returning Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Variable Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Passing Arguments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Variable-length Argument Lists . . . . . . . . . . . . . . . . . . . . . . . . 42 Passing Arguments by Reference . . . . . . . . . . . . . . . . . . . . . . . 43 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Licensed to 482634 - Amber Barrow (itsadmin@deakin.edu.au) Chapter 3 — Arrays 47 Array Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Printing Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Enumerative vs. Associative . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Multi-dimensional Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Unravelling Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
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Page 9 and 10: viii ” CONTENTS Delimiters . . .
Page 11 and 12: x ” CONTENTS The Factory Pattern
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38 ” Functions { } echo "Hello Wo
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40 ” Functions However, any time
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42 ” Functions Variable-length Ar
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44 ” Functions // Remove the defi
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48 ” Arrays assigns a numeric key
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50 ” Arrays $a = array (’4’ =
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52 ” Arrays } int(3) Note how the
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54 ” Arrays echo isset ($a[’a
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56 ” Arrays cope with the fact th
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58 ” Arrays If, however, all you
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60 ” Arrays $type = array(’inte
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62 ” Arrays ["b"]=> string(3) "ba
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64 ” Arrays { // Sort according t
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66 ” Arrays $cards = array (1, 2,
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68 ” Arrays $last_in = array_pop(
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70 ” Arrays want it to be compute
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74 ” Strings And Patterns Escape
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76 ” Strings And Patterns When us
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78 ” Strings And Patterns Note th
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80 ” Strings And Patterns You can
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82 ” Strings And Patterns echo st
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84 ” Strings And Patterns Formatt
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86 ” Strings And Patterns This ti
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88 ” Strings And Patterns b c d e
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90 ” Strings And Patterns lier in
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92 ” Strings And Patterns Sub-Exp
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94 ” Strings And Patterns [0]=> a
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98 ” Web Programming made for a P
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100 ” Web Programming Note that,
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102 ” Web Programming file (usual
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104 ” Web Programming GET or POST
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106 ” Web Programming The level o
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108 ” Web Programming UNIX timest
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110 ” Web Programming session.aut
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114 ” Object Oriented Programming
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150 ” Database Programming DELETE
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156 ” Database Programming PHP Da
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158 ” Database Programming $autho
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162 ” Database Programming $dbh->
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194 ” XML and Web Services What t
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200 ” XML and Web Services if ($r
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202 ” XML and Web Services $dom =
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204 ” XML and Web Services Workin
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216 ” Security tainted and this d
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218 ” Security spoofed forms, it
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220 ” Security $html = array(); $
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260 ” INDEX constants, 14 class c
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262 ” INDEX removeAttribute(), 20
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266 ” INDEX ArrayAccess, 177 offs
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268 ” INDEX set_exception_handler
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270 ” INDEX with printf(), 87 her
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