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Index: O

• object-oriented syntax, CGI.pm module: Standard and Object-Oriented Syntax
• objects
• • CGI
  • • HTTP headers, printing in error handling: Error Subroutines
  • CGI.pm
  • • error messages for: File Uploads with CGI.pm
    • $q prefix: Standard and Object-Oriented Syntax
  • Document Object Model, defining for HTML and XML documents: History
  • HTML::Template, importing parameters from CGI.pm: Syntax
  • Perl, DBM files, storing as: MLDBM
  • WDDX, interpreting with JavaScript: Example
• onChange handler (JavaScript)
• • assigning multiple statements to: Validating elements
  • filed validation functions, calling: Validation example
  • validating HTML form elements: Validating elements
• onCheck attribute: Checkboxes
• onClick attribute
• • image buttons: Image buttons
  • plain buttons: Plain buttons
  • reset buttons: Reset buttons
  • submit buttons: Submit buttons
• onFocus, onBlur, and onChange attributes: Text fields
• online software store (example): Trusting the Browser
• onSubmit handler (JavaScript): The <FORM> Tag
• • Submit buttons
  • Validating submits
  • Example
• open function: Is It Open?
• • PID of child process, checking: Is It Open?
  • special, instigating fork: fork and exec
• open source modules for Perl on CPAN: Why Perl?
• open system command: Check Status of System Calls
• opening and closing tags: An Introduction to XML
• • (see also closing tags)
  • HTML::Template commands: Syntax
  • XML, use in: An Introduction to XML
• opening uploaded files, limiting attempts: File Uploads with CGI.pm
• operating systems
• • binary and text files, distinguishing: Use binmode
  • binmode function, support for: binmode
  • CGI scripts, differences in handling of: Invoking CGI Scripts
  • ColdFusion language, use on: Alternatives to CGI
  • end-of-file character, using: Running Scripts from the Command Line
  • file names, variations in: File Uploads with CGI.pm
  • forward slashes (/) separating directories: Search Application
  • gcc compiler, obtaining pre-built binary of: Installing Modules
  • line endings
  • • CGI scripts, not matching: Line Endings
    • end-of-line characters, translating to \\\\n: File Uploads with CGI.pm
    • News module (example)differences in: Outputting documents
  • not using newlines, calling binmode for: Check the Client Browser
  • Perl
  • • allowing to fork: Security Strategies
    • speed differences in: Why Perl?
    • storage locations on different: The Pound-Bang
  • TrueType fonts, support of: Image Processing
• operators
• • -e operator: Image Processing
  • -M operator: Server Side Includes
  • • Search Application
  • -T operator: Searching One by One, Take Two
  • • Inverted Index Search
  • qq// operator: Here Documents
  • string manipulation in perl: Why Perl?
• optimization and efficiency, CGI programs: Efficiency and Optimization
• • FastCGI, using: FastCGI
  • mod_perl, using: mod_perl
  • Perl techniques for: Basic Perl Tips, Top Ten
• options: Inverted Index Search
• • (see also options under command line)
  • -il options for case-insensitive searches: Searching One by One
  • GET requests: Sending Data to the Server
  • POST requests: Sending Data to the Server
  • sendmail: Command-Line Options
• Options directive, disabling ExecCGI option: Configuring by extension
• Oracle, PL/SQL developing language: Separating Storage from Your Primary Code
• order information, sending: Hidden Fields
• output: STDERR
• • (see also STDERR; STDOUT)
  • alternatives to CGI.pm for generating: Alternatives for Generating Output
  • binary data, binmode function for: binmode
  • buffering (see buffering)
  • CGI programs: CGI Output
  • • buffering: Complete (Non-Parsed) Headers
    • caching by browsers: Caching
    • complete (non-parsed) headers: Complete (Non-Parsed) Headers
    • embedding in other programs: Executing CGI Programs
    • partial headers: Partial Headers
    • SSI parsing of: Server Side Includes
    • status codes and: Specifying status codes
  • CGI.pm
  • • HTML, generating with: Generating Output with CGI.pm
    • HTTP headers, generating with: Generating Output with CGI.pm
  • errors
  • • handling: Handling Errors
    • handling with CGI::Carp module: CGI::Carp
    • handling with error subroutines: Error Subroutines
  • existing components, modifying with Mason: Component Approach
  • external applications, including in HTML documents: Configuration
  • Mason module, modifying: Component Approach
  • from SSI directives: Tailoring SSI Output
  • stream, unbuffering: Unbuffer Output Stream
• outputting image data: Outputting Image Data
• • dynamic images
  • • in HTML: Including Dynamic Images in HTML
  • random images, CGI script returning: An Example
• overriding senders email addresses: Command-Line Options

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