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  2. <html>
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  3.  <head>
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  4.   <meta http-equiv="content-type" content="text/html; charset=UTF-8">
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  5.   <title>计算文件的 sha1 散列值</title>
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  6. 

  7.  </head>
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  8.  <body><div class="manualnavbar" style="text-align: center;">
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  9.  <div class="prev" style="text-align: left; float: left;"><a href="function.setlocale.html">setlocale</a></div>
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  10.  <div class="next" style="text-align: right; float: right;"><a href="function.sha1.html">sha1</a></div>
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  11.  <div class="up"><a href="ref.strings.html">字符串函数</a></div>
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  12.  <div class="home"><a href="index.html">PHP Manual</a></div>
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  13. </div><hr /><div id="function.sha1-file" class="refentry">
    14. 

  14.  <div class="refnamediv">
    15. 

  15.   <h1 class="refname">sha1_file</h1>
    16. 

  16.   <p class="verinfo">(PHP 4 &gt;= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">sha1_file</span> &mdash; <span class="dc-title">计算文件的 sha1 散列值</span></p>
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  17. 

  18.  </div>
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  19.  <div class="refsect1 description" id="refsect1-function.sha1-file-description">
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  20.   <h3 class="title">说明</h3>
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  21.   <div class="methodsynopsis dc-description">
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  22.    <span class="type">string</span> <span class="methodname"><strong>sha1_file</strong></span>
    23. 

  23.     ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
    24. 

  24.    [, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$raw_output</code><span class="initializer"> = false</span></span>
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  25.   ] )</div>
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  26. 

  27.   <p class="simpara">
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  28.    利用<a href="http://www.faqs.org/rfcs/rfc3174" class="link external">&raquo;&nbsp;美国安全散列算法 1</a>，计算并返回由 <em><code class="parameter">filename</code></em> 指定的文件的 sha1 散列值。该散列值是一个 40 字符长度的十六进制数字。
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  29.   </p>
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  30.  </div>
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  31. 

  32. 

  33.  <div class="refsect1 parameters" id="refsect1-function.sha1-file-parameters">
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  34.   <h3 class="title">参数</h3>
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  35.   <p class="para">
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  36.    <dl>
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  37. 

  38.     <dt>
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  39. 

  40.      <span class="term"><em><code class="parameter">filename</code></em></span>
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  41.      <dd>
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  42. 

  43.       <p class="para">
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  44.        要散列的文件的文件名。
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  45.       </p>
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  46.      </dd>
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  47. 

  48.     </dt>
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  49. 

  50.     <dt>
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  51. 

  52.      <span class="term"><em><code class="parameter">raw_output</code></em></span>
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  53.      <dd>
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  54. 

  55.       <p class="para">
    56. 

  56.        如果被设置为 <strong><code>TRUE</code></strong>，sha1 摘要将以 20 字符长度的原始格式返回。
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  57.       </p>
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  58.      </dd>
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  59. 

  60.     </dt>
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  61. 

  62.    </dl>
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  63. 

  64.   </p>
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  65.  </div>
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  66. 

  67. 

  68.  <div class="refsect1 returnvalues" id="refsect1-function.sha1-file-returnvalues">
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  69.   <h3 class="title">返回值</h3>
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  70.   <p class="para">
    71. 

  71.    成功返回一个字符串，否则返回 <strong><code>FALSE</code></strong>。
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  72.   </p>
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  73.  </div>
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  74. 

  75. 

  76.  <div class="refsect1 examples" id="refsect1-function.sha1-file-examples">
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  77.   <h3 class="title">范例</h3>
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  78.   <p class="para">
    79. 

  79.    <div class="example" id="example-4619">
    80. 

  80.     <p><strong>Example #1  <span class="function"><strong>sha1_file()</strong></span> 范例</strong></p>
    81. 

  81.     <div class="example-contents">
    82. 

  82. <div class="phpcode"><code><span style="color: #000000">
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  83. <span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">foreach(</span><span style="color: #0000BB">glob</span><span style="color: #007700">(</span><span style="color: #DD0000">'/home/Kalle/myproject/*.php'</span><span style="color: #007700">)&nbsp;as&nbsp;</span><span style="color: #0000BB">$ent</span><span style="color: #007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;if(</span><span style="color: #0000BB">is_dir</span><span style="color: #007700">(</span><span style="color: #0000BB">$ent</span><span style="color: #007700">))<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;continue;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">$ent&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #DD0000">'&nbsp;(SHA1:&nbsp;'&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">sha1_file</span><span style="color: #007700">(</span><span style="color: #0000BB">$ent</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">')'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
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  84. </span>
    85. 

  85. </code></div>
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  86.     </div>
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  87. 

  88.    </div>
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  89.   </p>
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  90.  </div>
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  91. 

  92.  <div class="refsect1 changelog" id="refsect1-function.sha1-file-changelog">
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  93.   <h3 class="title">更新日志</h3>
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  94.   <p class="para">
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  95.    <table class="doctable informaltable">
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  96.     
    97. 

  97.      <thead>
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  98.       <tr>
    99. 

  99.        <th>版本</th>
    100. 

  100.        <th>说明</th>
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  101.       </tr>
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  102. 

  103.      </thead>
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  104. 

  105.      <tbody class="tbody">
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  106.       <tr>
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  107.        <td>5.0.0</td>
    108. 

  108.        <td>
    109. 

  109.        新增 <em><code class="parameter">raw_output</code></em> 参数。
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  110.        </td>
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  111.       </tr>
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  112. 

  113.       <tr>
    114. 

  114.        <td>5.1.0</td>
    115. 

  115.        <td>
    116. 

  116.         改变函数以使用流 API。这意味着可以使用包装器，比如 <em>sha1_file(&#039;http://example.com/..&#039;)</em>。
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  117.        </td>
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  118.       </tr>
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  119. 

  120.      </tbody>
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  121.     
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  122.    </table>
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  123. 

  124.   </p>
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  125.  </div>
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  126. 

  127. 

  128.  <div class="refsect1 seealso" id="refsect1-function.sha1-file-seealso">
    129. 

  129.   <h3 class="title">参见</h3>
    130. 

  130.   <p class="para">
    131. 

  131.    <ul class="simplelist">
    132. 

  132.     <li class="member"> <span class="function"><a href="function.sha1.html" class="function" rel="rdfs-seeAlso">sha1()</a> - 计算字符串的 sha1 散列值</span></li>
    133. 

  133.     <li class="member"> <span class="function"><a href="function.md5-file.html" class="function" rel="rdfs-seeAlso">md5_file()</a> - 计算指定文件的 MD5 散列值</span></li>
    134. 

  134.     <li class="member"> <span class="function"><a href="function.crc32.html" class="function" rel="rdfs-seeAlso">crc32()</a> - 计算一个字符串的 crc32 多项式</span></li>
    135. 

  135.    </ul>
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  136.   </p>
    137. 

  137.  </div>
    138. 

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  144. </div></body></html>
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