ini.core.html

php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容

       <p class="para">
        Using a <i>.</i> in the include path allows for
        relative includes as it means the current directory.
       </p>
      </dd>

     </dt>


     <dt id="ini.doc-root">
      <span class="term">
       <i><tt class="parameter">doc_root</tt></i>

       <a href="language.types.string.html" class="type string">string</a>
      </span>

      <dd>

       <p class="para">
        PHP&#039;s &quot;root directory&quot; on the server. Only used if
        non-empty. If PHP is configured with <a href="features.safe-mode.html#ini.safe-mode" class="link">safe mode</a>, no files outside
        this directory are served.
        If PHP was not compiled with FORCE_REDIRECT, you <em class="emphasis">should
        </em> set doc_root if you are running PHP as a CGI under any web
        server (other than IIS). The alternative is to use the
        <a href="ini.core.html#ini.cgi.force-redirect" class="link">
        cgi.force_redirect</a> configuration below.
       </p>
      </dd>

     </dt>


     <dt id="ini.user-dir">
      <span class="term">
       <i><tt class="parameter">user_dir</tt></i>

       <a href="language.types.string.html" class="type string">string</a>
      </span>

      <dd>

       <p class="para">
        The base name of the directory used on a user&#039;s home directory for PHP
        files, for example <var class="filename">public_html
        </var>.
       </p>
      </dd>

     </dt>


     <dt id="ini.extension-dir">
      <span class="term">
       <i><tt class="parameter">extension_dir</tt></i>

       <a href="language.types.string.html" class="type string">string</a>
      </span>

      <dd>

       <p class="para">
        In what directory PHP should look for dynamically loadable
        extensions. See also: <a href="info.configuration.html#ini.enable-dl" class="link">enable_dl</a>,
        and <a href="function.dl.html" class="function">dl()</a>.
       </p>
      </dd>

     </dt>


     <dt id="ini.extension">
      <span class="term">
       <i><tt class="parameter">extension</tt></i>

       <a href="language.types.string.html" class="type string">string</a>
      </span>

      <dd>

       <p class="para">
        Which dynamically loadable extensions to load when PHP starts up.
       </p>
      </dd>

     </dt>


     <dt id="ini.cgi.check-shebang-line">
      <span class="term">
       <i><tt class="parameter">cgi.check_shebang_line</tt></i>

       <a href="language.types.boolean.html" class="type boolean">boolean</a>
      </span>

      <dd>

       <p class="para">
        Controls whether CGI PHP checks for line starting with #! (shebang)
        at the top of the running script. This line might be needed if the
        script support running both as stand-alone script and via PHP CGI.
        PHP in CGI mode skips this line and ignores its content if this
        directive is turned on.
       </p>
      </dd>

     </dt>


     <dt id="ini.cgi.fix-pathinfo">
      <span class="term">
       <i><tt class="parameter">cgi.fix_pathinfo</tt></i>

       <a href="language.types.boolean.html" class="type boolean">boolean</a>
      </span>

      <dd>

       <p class="para">
        Provides <em class="emphasis">real</em> PATH_INFO/PATH_TRANSLATED
        support for CGI.  PHP&#039;s previous behaviour was to set
        PATH_TRANSLATED to SCRIPT_FILENAME, and to not grok what PATH_INFO
        is.  For more information on PATH_INFO, see the cgi specs.  Setting
        this to 1 will cause PHP CGI to fix it&#039;s paths to conform to the
        spec.  A setting of zero causes PHP to behave as before.  Default
        is zero.  You should fix your scripts to use SCRIPT_FILENAME rather
        than PATH_TRANSLATED.
       </p>
      </dd>

     </dt>


     <dt id="ini.cgi.force-redirect">
      <span class="term">
       <i><tt class="parameter">cgi.force_redirect</tt></i>

       <a href="language.types.boolean.html" class="type boolean">boolean</a>
      </span>

      <dd>

       <p class="para">
        cgi.force_redirect is necessary to provide security running PHP as a
        CGI under most web servers. Left undefined, PHP turns this on by
        default. You can turn it off <em class="emphasis">at your own risk</em>.
       </p>
       <blockquote><p><b class="note">Note</b>: 
        
         Windows Users: You <em class="emphasis">can</em> safely turn this off for
         IIS, in fact, you <em class="emphasis">must</em>.
         To get OmniHTTPD or Xitami to work you <em class="emphasis">must</em> turn
         it off.
        <br />
       </p></blockquote>
      </dd>

     </dt>


     <dt id="ini.cgi.redirect-status-env">
      <span class="term">
       <i><tt class="parameter">cgi.redirect_status_env</tt></i>

       <a href="language.types.string.html" class="type string">string</a>
      </span>

      <dd>

       <p class="para">
        If cgi.force_redirect is turned on, and you are not running under
        Apache or Netscape (iPlanet) web servers, you <em class="emphasis">may</em>
        need to set an environment variable name that PHP will look for to
        know it is OK to continue execution.
       </p>
       <blockquote><p><b class="note">Note</b>: 
        
         Setting this variable <em class="emphasis">may</em> cause security issues,
         <em class="emphasis">know what you are doing first</em>.
        <br />
       </p></blockquote>
      </dd>

     </dt>


     <dt id="ini.fastcgi.impersonate">
      <span class="term">
       <i><tt class="parameter">fastcgi.impersonate</tt></i>

       <a href="language.types.string.html" class="type string">string</a>
      </span>

      <dd>

       <p class="para">
        FastCGI under IIS (on WINNT based OS) supports the ability to impersonate
        security tokens of the calling client. This allows IIS to define the
        security context that the request runs under. mod_fastcgi under Apache
        does not currently support this feature (03/17/2002)
        Set to 1 if running under IIS. Default is zero.
       </p>
      </dd>

     </dt>


     <dt id="ini.cgi.rfc2616-headers">
      <span class="term">
       <i><tt class="parameter">cgi.rfc2616_headers</tt></i>

       <a href="language.types.integer.html" class="type int">int</a>
      </span>

      <dd>

       <p class="para">
        Tells PHP what type of headers to use when sending HTTP response
        code. If it&#039;s set 0, PHP sends a Status: header that is supported
        by Apache and other web servers. When this option is set to 1, PHP
        will send <a href="http://www.faqs.org/rfcs/rfc2616" class="link external">&raquo; RFC 2616</a> compliant
        headers.  Leave it set to 0 unless you know what you&#039;re doing.
       </p>
      </dd>

     </dt>

    </dl>

   </p>
  </div>

  <div id="ini.sect.file-uploads" class="section">
   <h2 class="title">File Uploads</h2>
   <p class="para">
    <table border="5">
     <caption><b>File Uploads Configuration Options</b></caption>
     <colgroup>

      <thead valign="middle">
       <tr valign="middle">
        <th colspan="1">Name</th>
        <th colspan="1">Default</th>
        <th colspan="1">Changeable</th>
        <th colspan="1">Changelog</th>
       </tr>

      </thead>

      <tbody valign="middle" class="tbody">
       <tr valign="middle">
        <td colspan="1" rowspan="1" align="left">file_uploads</td>
        <td colspan="1" rowspan="1" align="left">&quot;1&quot;</td>
        <td colspan="1" rowspan="1" align="left">PHP_INI_SYSTEM</td>
        <td colspan="1" rowspan="1" align="left">PHP_INI_ALL in PHP &lt;= 4.2.3. Available since PHP 4.0.3.</td>
       </tr>

       <tr valign="middle">
        <td colspan="1" rowspan="1" align="left">upload_tmp_dir</td>
        <td colspan="1" rowspan="1" align="left">NULL</td>
        <td colspan="1" rowspan="1" align="left">PHP_INI_SYSTEM</td>
        <td class="empty">&nbsp;</td>
       </tr>

       <tr valign="middle">
        <td colspan="1" rowspan="1" align="left">upload_max_filesize</td>
        <td colspan="1" rowspan="1" align="left">&quot;2M&quot;</td>
        <td colspan="1" rowspan="1" align="left">PHP_INI_PERDIR</td>
        <td colspan="1" rowspan="1" align="left">PHP_INI_ALL in PHP &lt;= 4.2.3.</td>
       </tr>

      </tbody>
     </colgroup>

    </table>

   </p>

   <p class="para">Here&#039;s a short explanation of
the configuration directives.</p>

   <p class="para">
    <dl>

     <dt id="ini.file-uploads">
      <span class="term">
       <i><tt class="parameter">file_uploads</tt></i>

       <a href="language.types.boolean.html" class="type boolean">boolean</a>
      </span>

      <dd>

       <p class="para">
        Whether or not to allow HTTP
        <a href="features.file-upload.html" class="link">file uploads</a>. See also the
        <a href="ini.core.html#ini.upload-max-filesize" class="link">upload_max_filesize</a>,
        <a href="ini.core.html#ini.upload-tmp-dir" class="link">upload_tmp_dir</a>, and
        <a href="ini.core.html#ini.post-max-size" class="link">post_max_size</a> directives.
       </p>

       <span class="simpara">When an <a href="language.types.integer.html" class="type integer">integer</a> is used, the 
value is measured in bytes. Shorthand notation, as described 
in <a href="faq.using.html#faq.using.shorthandbytes" class="link">this FAQ</a>, may also be used.
</span>

      </dd>

     </dt>


     <dt id="ini.upload-tmp-dir">
      <span class="term">
       <i><tt class="parameter">upload_tmp_dir</tt></i>

       <a href="language.types.string.html" class="type string">string</a>
      </span>

      <dd>

       <p class="para">
        The temporary directory used for storing files when doing
        file upload. Must be writable by whatever user PHP
        is running as. If not specified PHP will use the system&#039;s default.
       </p>
      </dd>

     </dt>


     <dt id="ini.upload-max-filesize">
      <span class="term">
       <i><tt class="parameter">upload_max_filesize</tt></i>

       <a href="language.types.integer.html" class="type integer">integer</a>
      </span>

      <dd>

       <p class="para">
        The maximum size of an uploaded file.
       </p>

       <span class="simpara">When an <a href="language.types.integer.html" class="type integer">integer</a> is used, the 
value is measured in bytes. Shorthand notation, as described 
in <a href="faq.using.html#faq.using.shorthandbytes" class="link">this FAQ</a>, may also be used.
</span>

      </dd>

     </dt>

    </dl>

   </p>
  </div>

  <div id="ini.sql-general" class="section">
   <h2 class="title">General SQL</h2>
   <p class="para">
    <table border="5">
     <caption><b>General SQL Configuration Options</b></caption>
     <colgroup>

      <thead valign="middle">
       <tr valign="middle">
        <th colspan="1">Name</th>
        <th colspan="1">Default</th>
        <th colspan="1">Changeable</th>
        <th colspan="1">Changelog</th>
       </tr>

      </thead>

      <tbody valign="middle" class="tbody">
       <tr valign="middle">
        <td colspan="1" rowspan="1" align="left">sql.safe_mode</td>
        <td colspan="1" rowspan="1" align="left">&quot;0&quot;</td>
        <td colspan="1" rowspan="1" align="left">PHP_INI_SYSTEM</td>
        <td class="empty">&nbsp;</td>
       </tr>

      </tbody>
     </colgroup>

    </table>

   </p>

   <p class="para">Here&#039;s a short explanation of
the configuration directives.</p>

   <p class="para">
    <dl>

     <dt id="ini.sql.safe-mode">
      <span class="term">
       <i><tt class="parameter">sql.safe_mode</tt></i>

       <a href="language.types.boolean.html" class="type boolean">boolean</a>
      </span>

      <dd>

       <p class="para">
        If turned on, database connect functions that specify default values
        will use those values in place of supplied arguments. For default
        values see connect function documentation for the relevant database.
       </p>
      </dd>

     </dt>

    </dl>

   </p>
  </div>
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