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Perl Fundamentals |
| Product Description : Author Joshua Mostafa takes users through the versatile and powerful programming language known as PERL, a server side language whose primary duty is to handle dynamic content and service clients on the Internet. What separates PERL from other scripting languages is its flexibility. Users don't need to code in a certain way to effectively use PERL and have fun doing it. Joshua shows you what tools you need to get started in PERL and what resources to visit in order to perfect your scripting. Start learning now by clicking one of the topics below! |
Perl FundamentalsConceptsWelcome: what is Perl?Perl and the Web Static Web content Dynamic Web content What you'll need (1) What you'll need (2) Your first script: hello world Running your first script on a web server First StepsProgram flowVariables Strings and quotes More about strings Basic operators Combined operators More combined operators Data TypesScalars, hashes and arraysWorking with arrays More about arrays Array functions More array functions Multidimensional arrays Taking elements out of arrays More array manipulation Working with hashes Extracting data from hashes Multidimensional hashes Now you try: Data Types Making ChoicesIntroducing conditionalsConditional operators Conditional blocks The equality operator String comparison operators else clauses The elsif ladder Logical operators Nested conditionals Now you try: Choices Loops and Control StructuresRepetition: the while loopUsing the while loop The do..while loop Iteration: the for loop Looping over an array Nested loops The foreach loop Now you try: Loops Strings and Pattern MatchingExtracting a substringLocating a substring (1) Locating a substring (2) Changing case Here-document style strings Introducing regular expressions Matching simple patterns Case-insensitive pattern matching Matching globally Wildcards Character sets (1) Character sets (2) Quantifiers Using quantifiers (1) Using quantifiers (2) Alternation Subpatterns (1) Subpatterns (2) Greedy vs non-greedy quantifiers Examples of non-greedy matching Replacing using patterns Subpattern replacement (1) Subpattern replacement: (2) Now you try: Strings Interacting with the FilesystemReading from a fileWriting to a file (1) Writing to a file (2) Writing to a file (3) Reading a files contents at once Changing the default output filehandle Reading user input from the command line An interactive shell script Refining the script (1) Refining the script (2) The script complete Working with directories Changing the current working directory Running executable files (1) Running executable files (2) Command-line arguments Now you try: Interacting with Filesystems CGIRunning a CGI script on localhostChecking errors Uploading your script (1) Uploading your script (2) Environment variables (1) Environment variables (2) Serving HTML The query string Accessing GET variables Handling URL-encoded characters Using HTML forms Reading POST data Now you try: CGI Intermediate Coding TechniquesReusing codeSubroutines Arguments Returning a value Explicit returns Variable scope Modules and Packages (1) Modules and Packages (2) Database InteractivityPerl and databasesConnection handles Statement handles Running the script Using placeholders in SQL Now you try: Database Interactivity |
