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?>
<div id="filesystem.constants" class="appendix">
 <h1 class="title">预定义常量</h1>

 <p class="simpara">下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。</p>
 <dl>
  
   <dt id="constant.seek-set">
    <strong><code><a href="filesystem.constants.php#constant.seek-set">SEEK_SET</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">

    </span>
   </dd>
  
  
   <dt id="constant.seek-cur">
    <strong><code><a href="filesystem.constants.php#constant.seek-cur">SEEK_CUR</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">

    </span>
   </dd>
  
  
   <dt id="constant.seek-end">
    <strong><code><a href="filesystem.constants.php#constant.seek-end">SEEK_END</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">

    </span>
   </dd>
  
  
   <dt id="constant.lock-sh">
    <strong><code><a href="filesystem.constants.php#constant.lock-sh">LOCK_SH</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">

    </span>
   </dd>
  
  
   <dt id="constant.lock-ex">
    <strong><code><a href="filesystem.constants.php#constant.lock-ex">LOCK_EX</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">

    </span>
   </dd>
  
  
   <dt id="constant.lock-un">
    <strong><code><a href="filesystem.constants.php#constant.lock-un">LOCK_UN</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">

    </span>
   </dd>
  
  
   <dt id="constant.lock-nb">
    <strong><code><a href="filesystem.constants.php#constant.lock-nb">LOCK_NB</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">

    </span>
   </dd>
  
 </dl>

 <dl>
  <strong class="title">
   <span class="function"><a href="function.file.php" class="function">file()</a></span> 的可用 <code class="parameter">flags</code>
  </strong>

  
   <dt id="constant.file-use-include-path">
    <strong><code><a href="filesystem.constants.php#constant.file-use-include-path">FILE_USE_INCLUDE_PATH</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     在 <a href="ini.core.php#ini.include-path" class="link">include_path</a> 里搜索 <code class="parameter">filename</code>。
    </span>
   </dd>
  
  
   <dt id="constant.file-no-default-context">
    <strong><code><a href="filesystem.constants.php#constant.file-no-default-context">FILE_NO_DEFAULT_CONTEXT</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
    </span>
   </dd>
  
  
   <dt id="constant.file-append">
    <strong><code><a href="filesystem.constants.php#constant.file-append">FILE_APPEND</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     为存在的文件添加内容。
    </span>
   </dd>
  
  
   <dt id="constant.file-ignore-new-lines">
    <strong><code><a href="filesystem.constants.php#constant.file-ignore-new-lines">FILE_IGNORE_NEW_LINES</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     过滤换行（EOL）字符。
    </span>
   </dd>
  
  
   <dt id="constant.file-skip-empty-lines">
    <strong><code><a href="filesystem.constants.php#constant.file-skip-empty-lines">FILE_SKIP_EMPTY_LINES</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     过滤空行。
    </span>
   </dd>
  

  
   <dt id="constant.file-binary">
    <strong><code><a href="filesystem.constants.php#constant.file-binary">FILE_BINARY</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     二进制模式。
     <div class="warning"><strong class="warning">警告</strong>
      <p class="simpara">
       此常量无效，并且自 PHP 8.1.0 起弃用。
      </p>
     </div>
    </p>
   </dd>
  

  
   <dt id="constant.file-text">
    <strong><code><a href="filesystem.constants.php#constant.file-text">FILE_TEXT</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     文本模式。
     <div class="warning"><strong class="warning">警告</strong>
      <p class="simpara">
       此常量无效，并且自 PHP 8.1.0 起弃用。
      </p>
     </div>
    </p>
   </dd>
  
 </dl>

 <dl>
  <strong class="title">
   <span class="function"><a href="function.glob.php" class="function">glob()</a></span> 的可用 <code class="parameter">flags</code>
  </strong>

  
   <dt id="constant.glob-available-flags">
    <strong><code><a href="filesystem.constants.php#constant.glob-available-flags">GLOB_AVAILABLE_FLAGS</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     所有 <strong><code><a href="filesystem.constants.php#constant.glob-available-flags">GLOB_<span class="replaceable">*</span></a></code></strong> flag 的组合。等同于
     <code class="literal">0</code> | <strong><code><a href="filesystem.constants.php#constant.glob-brace">GLOB_BRACE</a></code></strong> |
     <strong><code><a href="filesystem.constants.php#constant.glob-mark">GLOB_MARK</a></code></strong> | <strong><code><a href="filesystem.constants.php#constant.glob-nosort">GLOB_NOSORT</a></code></strong> |
     <strong><code><a href="filesystem.constants.php#constant.glob-nocheck">GLOB_NOCHECK</a></code></strong> | <strong><code><a href="filesystem.constants.php#constant.glob-noescape">GLOB_NOESCAPE</a></code></strong> |
     <strong><code><a href="filesystem.constants.php#constant.glob-err">GLOB_ERR</a></code></strong> | <strong><code><a href="filesystem.constants.php#constant.glob-onlydir">GLOB_ONLYDIR</a></code></strong>
    </span>
   </dd>
  
  
   <dt id="constant.glob-brace">
    <strong><code><a href="filesystem.constants.php#constant.glob-brace">GLOB_BRACE</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     扩展 {a,b,c} 为匹配“a”、“b”或“c”
    </span>
    <blockquote class="note"><p><strong class="note">注意</strong>: 
     <span class="simpara">
      <strong><code><a href="filesystem.constants.php#constant.glob-brace">GLOB_BRACE</a></code></strong> 在一些非 GUN 系统无效，像 Solaris 或 Alpine Linux。
     </span>
    </p></blockquote>
   </dd>
  
  
   <dt id="constant.glob-err">
    <strong><code><a href="filesystem.constants.php#constant.glob-err">GLOB_ERR</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     读取错误（如目录无法读取）时停止，默认忽略错误。
    </span>
   </dd>
  
  
   <dt id="constant.glob-mark">
    <strong><code><a href="filesystem.constants.php#constant.glob-mark">GLOB_MARK</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     向每个返回的目录添加斜线（在 Windows 上为反斜线）
    </span>
   </dd>
  
  
   <dt id="constant.glob-nocheck">
    <strong><code><a href="filesystem.constants.php#constant.glob-nocheck">GLOB_NOCHECK</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     如果没有找到匹配该模式的文件，则返回搜索模式
    </span>
   </dd>
  
  
   <dt id="constant.glob-noescape">
    <strong><code><a href="filesystem.constants.php#constant.glob-noescape">GLOB_NOESCAPE</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     反斜线不引用元字符
    </span>
   </dd>
  
  
   <dt id="constant.glob-nosort">
    <strong><code><a href="filesystem.constants.php#constant.glob-nosort">GLOB_NOSORT</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     按照目录中出现的顺序返回文件（不排序）。当不使用此 flag 时，路径名按字母顺序排序
    </span>
   </dd>
  
  
   <dt id="constant.glob-onlydir">
    <strong><code><a href="filesystem.constants.php#constant.glob-onlydir">GLOB_ONLYDIR</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     只返回与模式匹配的目录条目
    </span>
   </dd>
  
 </dl>

 <dl>
  <strong class="title">
   <span class="function"><a href="function.pathinfo.php" class="function">pathinfo()</a></span> 的可用 <code class="parameter">flags</code>
  </strong>
  
   <dt id="constant.pathinfo-all">
    <strong><code><a href="filesystem.constants.php#constant.pathinfo-all">PATHINFO_ALL</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     路径信息的所有部分都以关联数组的形式返回。
    </span>
   </dd>
  
  
   <dt id="constant.pathinfo-dirname">
    <strong><code><a href="filesystem.constants.php#constant.pathinfo-dirname">PATHINFO_DIRNAME</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     目录或文件的路径。
    </span>
   </dd>
  
  
   <dt id="constant.pathinfo-basename">
    <strong><code><a href="filesystem.constants.php#constant.pathinfo-basename">PATHINFO_BASENAME</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     目录的名称或文件的名称和扩展名。
    </span>
   </dd>
  
  
   <dt id="constant.pathinfo-extension">
    <strong><code><a href="filesystem.constants.php#constant.pathinfo-extension">PATHINFO_EXTENSION</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     文件的扩展名。
    </span>
   </dd>
  
  
   <dt id="constant.pathinfo-filename">
    <strong><code><a href="filesystem.constants.php#constant.pathinfo-filename">PATHINFO_FILENAME</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     文件的名称（不带扩展名）或目录的名称。
    </span>
   </dd>
  
 </dl>

 <dl>
  <strong class="title">
   <span class="function"><a href="function.parse-ini-file.php" class="function">parse_ini_file()</a></span> 和 <span class="function"><a href="function.parse-ini-string.php" class="function">parse_ini_string()</a></span>
   的可用 <code class="parameter">scanner_mode</code>
  </strong>

  
   <dt id="constant.ini-scanner-normal">
    <strong><code><a href="filesystem.constants.php#constant.ini-scanner-normal">INI_SCANNER_NORMAL</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     普通的 INI 扫描模式。
    </span>
   </dd>
  

  
   <dt id="constant.ini-scanner-raw">
    <strong><code><a href="filesystem.constants.php#constant.ini-scanner-raw">INI_SCANNER_RAW</a></code></strong>
     (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     原始（Raw） INI 扫描模式。
    </span>
   </dd>
  

  
   <dt id="constant.ini-scanner-typed">
    <strong><code><a href="filesystem.constants.php#constant.ini-scanner-typed">INI_SCANNER_TYPED</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     Typed INI 扫描模式。
    </span>
   </dd>
  
 </dl>

 <dl>
  <strong class="title">
   <span class="function"><a href="function.fnmatch.php" class="function">fnmatch()</a></span> 的可用 <code class="parameter">flags</code>
  </strong>

  
   <dt id="constant.fnm-noescape">
    <strong><code><a href="filesystem.constants.php#constant.fnm-noescape">FNM_NOESCAPE</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     禁用反斜线转义
    </span>
   </dd>
  

  
   <dt id="constant.fnm-pathname">
    <strong><code><a href="filesystem.constants.php#constant.fnm-pathname">FNM_PATHNAME</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     字符串里的斜杠只匹配指定模式里的斜杠。
    </span>
   </dd>
  

  
   <dt id="constant.fnm-period">
    <strong><code><a href="filesystem.constants.php#constant.fnm-period">FNM_PERIOD</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     字符串里的起始点号必须完全匹配指定模式里的点号。
    </span>
   </dd>
  

  
   <dt id="constant.fnm-casefold">
    <strong><code><a href="filesystem.constants.php#constant.fnm-casefold">FNM_CASEFOLD</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <span class="simpara">
     大小写不敏感的匹配，GNU 扩展的一部分。
    </span>
   </dd>
  
 </dl>

 <dl id="filesystem.constants.upload">
  <strong class="title">PHP 文件上传常量</strong>
  
   <dt id="constant.upload-err-cant-write">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-cant-write">UPLOAD_ERR_CANT_WRITE</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     文件无法写入磁盘。常量值为 <code class="literal">7</code>。
    </p>
   </dd>
  
  
   <dt id="constant.upload-err-extension">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-extension">UPLOAD_ERR_EXTENSION</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     PHP 扩展程序停止了文件上传。PHP 没有提供确定是哪个扩展程序导致文件上传停止的方法；使用 <span class="function"><a href="function.phpinfo.php" class="function">phpinfo()</a></span>
     检查已加载扩展程序的列表可能会有所帮助。常量的值为 <code class="literal">8</code>。
    </p>
   </dd>
  
  
   <dt id="constant.upload-err-form-size">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-form-size">UPLOAD_ERR_FORM_SIZE</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     上传的文件超出了 HTML 表单中指定的 <em>MAX_FILE_SIZE</em>
     指令。常量的值为 <code class="literal">2</code>。
    </p>
   </dd>
  
  
   <dt id="constant.upload-err-ini-size">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-ini-size">UPLOAD_ERR_INI_SIZE</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     上传的文件超出了 <var class="filename">php.ini</var> 中 <a href="ini.core.php#ini.upload-max-filesize" class="link">upload_max_filesize</a>
     命令的大小。该常量的值是 <code class="literal">1</code>。
    </p>
   </dd>
  
  
   <dt id="constant.upload-err-no-file">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-no-file">UPLOAD_ERR_NO_FILE</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     未上传任何文件。常量值为 <code class="literal">4</code>。
    </p>
   </dd>
  
  
   <dt id="constant.upload-err-no-tmp-dir">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-no-tmp-dir">UPLOAD_ERR_NO_TMP_DIR</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     缺少临时文件夹。常量的值为 <code class="literal">6</code>。
    </p>
   </dd>
  
  
   <dt id="constant.upload-err-ok">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-ok">UPLOAD_ERR_OK</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     没有错误，文件上传成功。常量值为 <code class="literal">0</code>。
    </p>
   </dd>
  
  
   <dt id="constant.upload-err-partial">
    <strong><code><a href="filesystem.constants.php#constant.upload-err-partial">UPLOAD_ERR_PARTIAL</a></code></strong>
    (<span class="type"><a href="language.types.integer.php" class="type int">int</a></span>)
   </dt>
   <dd>
    <p class="para">
     上传的文件仅部分上传。常量值为 <code class="literal">3</code>。
    </p>
   </dd>
  
 </dl>
</div>
<?php manual_footer($setup); ?>