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Zend PHP Certification Study Guide

Name: Zend PHP Certification Study Guide
Author: Zend Technologies
ISBN: 9780672327094

by Zend Technologies

July 2004

Intermediate to advanced

264 pages

4h 40m

English

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Copyright
About the Authors
We Want to Hear from You!
Reader Services
Foreword
Introduction
What Does This Guide Cover?How Is the Guide Organized?Other Resources You Might Want to Consult
1. The Basics of PHP
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterLanguage and PlatformGetting StartedThe Special <?= ?> TagsScripts and FilesManipulating DataNumeric ValuesString ValuesBoolean ValuesArraysObjectsThe NULL Data TypeResourcesIdentifiers, Constants, and VariablesVariablesVariable Substitution in StringsStatementsConstantsOperatorsThe Assignment OperatorArithmetic OperatorsBitwise OperatorsError-control OperatorsString OperatorsComparison OperatorsLogical OperatorsTypecastingCombined Assignment OperatorsCombining Operations: Operator Precedence and AssociativityConditional StructuresAlternative if-then-else SyntaxShort-form if-then-elseThe case StatementIteration and LoopsThe while StructureThe do-while StructureThe for LoopContinuing a LoopFunctions and ConstructsFunctions and Variable ScopeFunctions with Variable ParametersVariable Variables and Variable FunctionsExam Prep Questions
2. Object-Oriented PHP
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterGetting StartedInstantiating a Class: ObjectsClasses as NamespacesObjects and ReferencesImplementing InheritanceMagic Functions: Serializing ObjectsExam Prep Questions
3. PHP and the Web
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterServer-side Versus Client-sideHTML FormsCookiesSessionsExam Prep Questions
4. Arrays
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterCreating ArraysUsing the Array OperatorCounting the Number of Elements in an ArrayAssigning Values from an Array to Multiple VariablesMultidimensional ArraysNavigating ArraysUsing foreachUsing the Internal PointerUsing a CallbackManipulating KeysChecking if an Element ExistsChanging the Array of KeysSorting an Array by Its KeysManipulating ArraysSorting Multidimensional ArraysRandomizing ArraysMerging ArraysIntersection and DifferenceSerializing ArraysExam Prep Questions

5. Strings and Regular Expressions
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterComparing StringsComparison with == and ===Using strcmp and FriendsMatching Portions of StringsMatching Leading SubstringsMatching Substrings at Arbitrary OffsetsFormatting Stringsprintf Formatsprintf() Family FunctionsExtracting Data from StringsExtracting Substrings by OffsetExtracting Formatted DataModifying StringsModifying Substrings by OffsetReplacing SubstringsRegular ExpressionsBasic PCRE SyntaxExtracting Data with Regular ExpressionsPattern Replacement with Regular ExpressionsSplitting Strings into ComponentsExam Prep Questions
6. File Manipulation
Techniques You’ll Need to MasterTerms You’ll Need to UnderstandOpening FilesClosing FilesReading from a FileWriting to a FileDetermining Information About FilesManipulating Files on the FilesystemCopying, Deleting, and Moving FilesChanging Ownership and PermissionsLocking FilesMiscellaneous Shortcutsfile()readfile()file_get_contents()Exam Prep Questions
7. Managing Dates and Times
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterHow PHP Handles DatesGetting the Current Time StampGetting a Date ArrayFormatting a Date StringGetting a UNIX Time Stamp from a Date ArrayGetting a UNIX Time Stamp from a StringExam Prep Questions
8. Managing Email
IntroductionTerms You’ll Need to UnderstandTechniques You’ll Need to MasterHow Email Is DeliveredMTA—Mail Transport AgentSMTP—Simple Mail Transport ProtocolMX RecordsMUA—Mail User AgentSASL—Simple Authentication and Security LayerOther Emerging TechnologiesPreparing PHPIf You Are Using PHP on UNIXIf You Are Using PHP on Windows or NetwareSending EmailSending an Email to More Than One RecipientManaging Email HeadersThe Cc: and Bcc: HeadersThe From: HeaderSetting the SubjectFormatting an Email MessagePlain-Text EmailsBasic HTML EmailsAttaching a File to a MessageAttached Images for HTML EmailsUsing Extra Command-Line ParametersA Word About Email DeliveryFurther ReadingExam Prep Questions
9. PHP and Databases
Terms You’ll Need to UnderstandTechniques You’ll Need to Master“Databasics”IndicesWriting Good IndicesPrimary KeysForeign Keys and RelationsCreating Tables or Adding and Removing RowsInserting a RowDeleting RowsRetrieving Information from a DatabaseExtracting Data from More Than One TableAggregate FunctionsSortingTransactionsPHP and DatabasesThere’s Date and DateExam Prep Questions
10. Stream and Network Programming
Terms You’ll Need to UnderstandTechniques You’ll Need to Masterphp.ini Settings to UnderstandWhat Are File Wrappers?How Do You Choose Which File Wrapper Is Used?What Built-In Wrappers Does PHP Provide?Not All Wrappers Are Created EqualUsing a File WrapperCorrectly Detecting Line EndingsClosing a File WrapperOther Functions That Work with File WrappersIntroducing StreamsWhat Is Stream Metadata?PipelinesWhat Is the Stream Transport?What Is the Stream Context?How Do Streams Affect Me?Connecting to Remote Hosts Using SocketsWhen Should I Use a Socket Instead of a File Wrapper?What Network Transports Does PHP Support?How Do I Open a Socket?Persistent SocketsTimeouts When Opening a SocketHow Do I Use a Socket?Blocking ModeRead/Write TimeoutsClosing a SocketFurther ReadingExam Prep Questions
11. Security
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterData FilteringRegister GlobalsSQL InjectionCommand InjectionCross-Site ScriptingShared HostingExam Prep Questions
12. Debugging and Performance
Terms You’ll Need to UnderstandTechniques You’ll Need to MasterCoding StandardsFlattening if StatementsSplitting Single Commands Across Multiple LinesConcatenation Versus SubstitutionChoose Your Opening Tags CarefullyOne Equal, Two Equals, Three EqualsThere’s Equal and EqualTesting for Resource AllocationTernary Operators and if StatementsLogging and DebuggingUsing DebuggersOptimizing PerformanceHardware IssuesWeb Server IssuesAvoid OverkillZip It UpDatabase OptimizationsKeep Your Code SimpleCaching TechniquesBytecode CachesExam Prep Questions
13. Getting Ready for the Certification Exam
What the Exam TestsHow to RegisterRegistration via Pearson VUE Call CenterRegistration via the Person VUE WebsiteRegistration at the Test CenterWhat to Expect at the Test CenterHow the Exam WorksExam InstructionsNDA (NONDISCLOSURE AGREEMENT)Viewing Backward and ForwardReviewing Your AnswersYour CommentsWhat Kinds of Questions Are Asked?Single Choice QuestionsMultiple Choice QuestionsFill in the Blanks QuestionsOpen Questions
Practice Exam Questions
Answers
Glossary

Content preview from Zend PHP Certification Study Guide

Appendix . Practice Exam Questions

Which of the following strings are not valid modes for the fopen() function?

a+b
b+a
at
w
x+

Consider the following piece of code:

<?php
$arr = array(3 => "First", 2=> "Second", 1=> "Third");
list (, $result) = $arr;
?>

After running it, the value of $result would be

First
Second
Third
This piece of code will not run, but fail with a parse error.

In standard SQL-92, which of these situations do not require or cannot be handled through the use of an aggregate SQL function? (Choose 2)

Calculating the sum of all the values in a column.
Determining the minimum value in a result set.
Grouping the results of a query by one or more fields.
Calculating the sum of all values in a column and retrieving all the values of another column ...

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Zend PHP Certification Study Guide

by Zend Technologies

Appendix . Practice Exam Questions

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