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<html><head><title>Index: H (CGI Programming with Perl)</title></head><body bgcolor="#FFFFFF" text="#000000"><!-- START OF BODY --><!-- TOP BANNER --><p><img src="../gifs/smbanns.gif" usemap="#banner-map" border=0 alt="Book Home" ></a></p><map name="banner-map"><area alt="CGI Programming with Perl" href="../index.htm" coords="0,0,466,65" shape="rect" /><area alt="Search this book" href="../jobjects/fsearch.htm" coords="467,0,514,18" shape="rect" /></map></map><!-- TOP INDEX LINKS --><p><font size="-1"><a href="idx_0.htm">Symbols</a>| <a href="idx_a.htm">A</a>| <a href="idx_b.htm">B</a>| <a href="idx_c.htm">C</a>| <a href="idx_d.htm">D</a>| <a href="idx_e.htm">E</a>| <a href="idx_f.htm">F</a>| <a href="idx_g.htm">G</a>| <a href="idx_h.htm">H</a>| <a href="idx_i.htm">I</a>| <a href="idx_j.htm">J</a>| <a href="idx_k.htm">K</a>| <a href="idx_l.htm">L</a>| <a href="idx_m.htm">M</a>| <a href="idx_n.htm">N</a>| <a href="idx_o.htm">O</a>| <a href="idx_p.htm">P</a>| <a href="idx_q.htm">Q</a>| <a href="idx_r.htm">R</a>| <a href="idx_s.htm">S</a>| <a href="idx_t.htm">T</a>| <a href="idx_u.htm">U</a>| <a href="idx_v.htm">V</a>| <a href="idx_w.htm">W</a>| <a href="idx_x.htm">X</a>| <a href="idx_y.htm">Y</a>| <a href="idx_z.htm">Z</a></FONT><!-- INDEX SECTION BODY --><H1>Index: H</H1><DL><a name="handlers"><dt>handlers</dt><dd><dl> <a name="Apache-Perl-not-implementing"> <dt>Apache/Perl, not implementing: <a href="../ch17_03.htm#INDEX-3232">17.3.1. Installation and Configuration</a></dt> <a name="response-handlers"> <dt>response handlers: <a href="../ch17_03.htm#INDEX-3228">17.3. mod_perl</a></dt> </dl></dd><a name="handles"><dt>handles (see <a href="idx_f.htm#file-handles">file handles</a>)</dt><a name="hard-disk-client-user-storing-cookies-on"><dt>hard disk (client user), storing cookies on: <a href="../ch11_03.htm#INDEX-2260">11.3.1. Setting Cookies</a></dt><a name="hash-tables"><dt>hash tables</dt><dd><dl> <a name="DBM-files-and"> <dt>DBM files and: <a href="../ch10_02.htm#INDEX-2020">10.2. DBM Files</a></dt> <a name="tying-to-DBM-file"> <dt>tying to DBM file: <a href="../ch10_02.htm#INDEX-2022">10.2. DBM Files</a></dt> <a name="untying-from-database-files"> <dt>untying from database files: <a href="../ch10_02.htm#INDEX-2040">10.2.1. DB_File</a></dt> </dl></dd><a name="hashes"><dt>hashes</dt><dd><dl> <a name="command-line-options-storing-in"> <dt>command-line options, storing in: <a href="../ch12_03.htm#INDEX-2372">12.3. Inverted Index Search</a></dt> <a name="of-data-or-hash-reference-subroutines-returning"> <dt>of data or hash reference, subroutines returning: <a href="../ch04_03.htm#INDEX-918">4.3. Decoding Form Input</a></dt> <a name="elements-interpreting-as-attributes-for-HTML-elements"> <dt>elements, interpreting as attributes for HTML elements: <a href="../ch05_03.htm#INDEX-1147">5.3.3. Standard HTML Elements</a></dt> <a name="hash-algorithms-using-to-generate-digests"> <dt>hash algorithms, using to generate digests: <a href="../ch08_03.htm#INDEX-1709">8.3. Encryption</a></dt> <a name="HTML-:-:Template-and"> <dt>HTML::Template and: <a href="../ch06_03.htm#INDEX-1367">6.3.1.1. Loops</a></dt> <a name="index-file-binding-to"> <dt>index file, binding to: <a href="../ch12_03.htm#INDEX-2391">12.3. Inverted Index Search</a></dt> <a name="JavaScript-references-to"> <dt>JavaScript, references to: <a href="../ch05_03.htm#INDEX-1120">5.3.2.1. start_html</a></dt> <a name="meta-tags-reference-to"> <dt>meta tags, reference to: <a href="../ch05_03.htm#INDEX-1116">5.3.2.1. start_html</a></dt> <a name="read-write-basis-for-accessing"> <dt>read/write basis for accessing: <a href="../ch10_02.htm#INDEX-2033">10.2.1. DB_File</a></dt> </dl></dd><a name="HEAD-requests"><dt>HEAD requests: <a href="../ch02_03.htm#INDEX-313">2.3.1.3. HEAD</a></dt><a name="header-method"><dt>header method</dt><dd><dl> <a name="disabling-caching-with"> <dt>disabling caching with: <a href="../ch11_03.htm#INDEX-2286">11.3.2. Testing for Cookies</a></dt> <a name="locating"> <dt>locating: <a href="../ch05_01.htm#INDEX-964">5.1.3. Standard and Object-Oriented Syntax</a></dt> </dl></dd><a name="headers"><dt>headers: <a href="../ch03_03.htm#INDEX-608">3.3.1.3. Specifying status codes</a></dt><dd><dl> <dt>(see also <a href="idx_s.htm#status-headers">status headers</a>)</dt> <a name="CGI-programs"> <dt>CGI programs</dt><dd><dl> <a name="generating-partial-headers"> <dt>generating partial headers: <a href="../ch03_03.htm#INDEX-566">3.3.1. Partial Headers</a></dt> <a name="requesting-no-caching"> <dt>requesting no caching: <a href="../ch03_04.htm#INDEX-716">3.4.3. Restricting Image Hijacking</a></dt> </dl></dd> <a name="email"> <dt>email</dt><dd><dl> <a name="adding-extra-to"> <dt>adding extra to: <a href="../ch09_04.htm#INDEX-1863">9.4.1. Command-Line Options</a></dt> <a name="fields"> <dt>fields: <a href="../ch09_03.htm#INDEX-1834">9.3. Structure of Internet Email</a></dt> </dl></dd> <a name="environment-variables-for"> <dt>environment variables for: <a href="../ch03_02.htm#INDEX-540">3.2.1. CGI Environment Variables</a></dt> <a name="HTML-CGI-application-errors-and"> <dt>HTML, CGI application errors and: <a href="../ch15_01.htm#INDEX-2893">15.1.4. "Malformed" Header</a></dt> <a name="HTML-tables-rows-consisting-of-...-cells"> <dt>HTML tables, rows consisting of ... cells: <a href="../ch06_04.htm#INDEX-1435">6.4.3.1. Tables</a></dt> <a name="HTTP"> <dt>HTTP: <a href="../ch02_02.htm#INDEX-262">2.2.1. The Request and Response Cycle</a></dt><dd><dl> <dt><a href="../ch02_02.htm#INDEX-277">2.2.2. HTTP Headers</a></dt> <dt><a href="../ch02_04.htm#INDEX-370">2.4. Server Responses</a></dt> <a name="CGI-scripts-declaring-type-of-document-output"> <dt>CGI scripts, declaring type of document output: <a href="../ch01_02.htm#INDEX-56">1.2.1. Sample CGI</a></dt> <a name="Cookie-header"> <dt>Cookie header: <a href="../ch11_03.htm#INDEX-2263">11.3.1. Setting Cookies</a></dt> <a name="cookie-header-lines"> <dt>cookie header lines: <a href="../ch11_01.htm#INDEX-2177">11. Maintaining State</a></dt> <a name="CRLF-requirement"> <dt>CRLF requirement: <a href="../ch03_03.htm#INDEX-583">3.3.1.1. Outputting documents</a></dt> <a name="environment-variables-information-on-server-and-client"> <dt>environment variables, information on server and client: <a href="../ch03_02.htm#INDEX-536">3.2. Environment Variables</a></dt> <a name="error-handling-and"> <dt>error handling and: <a href="../ch05_05.htm#INDEX-1206">5.5.3. Error Subroutines</a></dt> <a name="extensions"> <dt>extensions: <a href="../ch02_03.htm#INDEX-359">2.3.2.8. Cookies</a></dt> <a name="fields"> <dt>fields: <a href="../ch02_02.htm#INDEX-284">2.2.2. HTTP Headers</a></dt><dd><dl> <dt><a href="../ch02_03.htm#INDEX-320">2.3.2. Request Header Field Lines</a></dt> </dl></dd> <a name="formatting-information-in"> <dt>formatting information in: <a href="../ch01_02.htm#INDEX-23">1.2. Introduction to CGI</a></dt> <a name="generating-with-CGI.pm-module"> <dt>generating with CGI.pm module: <a href="../ch05_03.htm#INDEX-1075">5.3. Generating Output with CGI.pm</a></dt> <a name="header-and-redirect-methods-returning-with"> <dt>header and redirect methods, returning with: <a href="../ch05_03.htm#INDEX-1080">5.3.1. Controlling HTTP Headers with CGI.pm</a></dt> <a name="media-types-listing-preferred"> <dt>media types, listing preferred: <a href="../ch02_06.htm#INDEX-469">2.6.1. Media Type</a></dt> <a name="request-line"> <dt>request line: <a href="../ch02_03.htm#INDEX-297">2.3.1. The Request Line</a></dt> <a name="responses"> <dt>responses: <a href="../ch02_04.htm#INDEX-383">2.4.2. Server Headers</a></dt> <a name="separating-from-message-body"> <dt>separating from message body: <a href="../ch03_03.htm#INDEX-576">3.3.1.1. Outputting documents</a></dt> <a name="Set-Cookie"> <dt>Set-Cookie: <a href="../ch11_03.htm#INDEX-2261">11.3.1. Setting Cookies</a></dt> </dl></dd> <a name="information-in-web-server-response"> <dt>information in, web server response: <a href="../ch01_02.htm#INDEX-27">1.2. Introduction to CGI</a></dt> <a name="Internet-email-messages"> <dt>Internet email messages: <a href="../ch09_03.htm#INDEX-1831">9.3. Structure of Internet Email</a></dt> <a name="malformed-CGI-script-errors"> <dt>malformed, CGI script errors: <a href="../ch15_01.htm#INDEX-2888">15.1.4. "Malformed" Header</a></dt> </dl></dd><a name="here-documents"><dt>here documents: <a href="../ch05_04.htm#INDEX-1167">5.4.2. Here Documents</a></dt><dd><dl> <a name="print-statements"> <dt>print statements: <a href="../ch01_02.htm#INDEX-59">1.2.1. Sample CGI</a></dt> </dl></dd><a name="hexadecimal-numbers"><dt>hexadecimal numbers</dt><dd><dl> <a name="digests"> <dt>digests: <a href="../ch08_03.htm#INDEX-1718">8.3.1. MD5</a></dt> <a name="HTTP-characters-replacing"> <dt>HTTP characters, replacing: <a href="../ch04_01.htm#INDEX-749">4.1. Sending Data to the Server</a></dt> <a name="URL-character-encoding"> <dt>URL character encoding: <a href="../ch02_01.htm#INDEX-229">2.1.3. URL Encoding</a></dt> <a name="URL-encoded-characters-decoding"> <dt>URL-encoded characters, decoding: <a href="../ch04_03.htm#INDEX-917">4.3. Decoding Form Input</a></dt> </dl></dd><a name="hidden-fields"><dt>hidden fields: <a href="../ch04_02.htm#INDEX-808">4.2.3.3. Hidden fields</a></dt><dd><dl> <a name="data-security-risks-in-trusting"> <dt>data, security risks in trusting: <a href="../ch08_02.htm#INDEX-1683">8.2.5. Trusting the Browser</a></dt> <a name="feedback-forms-email-addresses-in"> <dt>feedback forms, email addresses in: <a href="../ch09_01.htm#INDEX-1794">9.1.2. False Identities</a></dt> <a name="NAME-and-VALUE-attributes-in"> <dt>NAME and VALUE attributes in: <a href="../ch04_02.htm#INDEX-812">4.2.3.3. Hidden fields</a></dt> <a name="session-information-storing-in"> <dt>session information, storing in: <a href="../ch11_02.htm#INDEX-2216">11.2. Hidden Fields</a></dt> <a name="tainted-data-in-email-addresses"> <dt>tainted data in email addresses: <a href="../ch09_01.htm#INDEX-1796">9.1.2. False Identities</a></dt> <a name="unique-identifiers-storing-in"> <dt>unique identifiers, storing in: <a href="../ch11_01.htm#INDEX-2174">11. Maintaining State</a></dt> </dl></dd><a name="hit-counter"><dt>hit counter (see <a href="idx_a.htm#access-counters">access counters</a>)</dt><a name="home-pages-for-projects"><dt>home pages for projects: <a href="../appa_05.htm#INDEX-3338">A.5. Project Home Pages</a></dt><a name="Host-field"><dt>Host field: <a href="../ch02_03.htm#INDEX-324">2.3.2.1. Host</a></dt><a name="hosts"><dt>hosts: <a href="../ch02_01.htm#INDEX-184">2.1.1. Elements of a URL</a></dt><dd><dl> <a name="in-email-addresses"> <dt>in email addresses: <a href="../ch09_02.htm#INDEX-1821">9.2.1. Validating Syntax</a></dt> <a name="including-name-in-absolute-URLs"> <dt>including name in absolute URLs: <a href="../ch02_01.htm#INDEX-220">2.1.2. Absolute and Relative URLs</a></dt> <a name="ommitting-in-URLs"> <dt>ommitting in URLs: <a href="../ch02_01.htm#INDEX-217">2.1.2. Absolute and Relative URLs</a></dt> </dl></dd><a name="HTML-Hypertext-Markup-Language"><dt>HTML (Hypertext Markup Language</dt><dd><dl> <a name="forms"> <dt>forms (see <a href="idx_f.htm#forms">forms</a>)</dt> </dl></dd><a name="HTML-pages"><dt>HTML pages</dt><dd><dl> <a name="headers-and-footers-maintaining-across-pages"> <dt>headers and footers, maintaining across pages: <a href="../ch11_02.htm#INDEX-2241">11.2. Hidden Fields</a></dt> <a name="link-for-JPEG-or-PNG-images"> <dt>link for JPEG or PNG images: <a href="../ch03_04.htm#INDEX-691">3.4.1. Check the Client Browser</a></dt> <a name="LWP-module-and"> <dt>LWP module and: <a href="../ch14_02.htm#INDEX-2712">14.2. An Introduction to XML</a></dt> <a name="static-forwarding-user-to"> <dt>static, forwarding user to: <a href="../ch03_03.htm#INDEX-589">3.3.1.2. Forwarding to another URL</a></dt> <a name="viewing-Perl-source-code-in"> <dt>viewing Perl source code in: <a href="../ch15_03.htm#INDEX-3012">15.3.4. Dumping Variables</a></dt> </dl></dd>⌨️ 快捷键说明
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