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- <title>计算文件的 sha1 散列值</title>
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- <div class="refnamediv">
- <h1 class="refname">sha1_file</h1>
- <p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">sha1_file</span> — <span class="dc-title">计算文件的 sha1 散列值</span></p>
- </div>
- <div class="refsect1 description" id="refsect1-function.sha1-file-description">
- <h3 class="title">说明</h3>
- <div class="methodsynopsis dc-description">
- <span class="type">string</span> <span class="methodname"><strong>sha1_file</strong></span>
- ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
- [, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$raw_output</code><span class="initializer"> = false</span></span>
- ] )</div>
- <p class="simpara">
- 利用<a href="http://www.faqs.org/rfcs/rfc3174" class="link external">» 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。
- </p>
- </div>
- <div class="refsect1 parameters" id="refsect1-function.sha1-file-parameters">
- <h3 class="title">参数</h3>
- <p class="para">
- <dl>
- <dt>
- <span class="term"><em><code class="parameter">filename</code></em></span>
- <dd>
- <p class="para">
- 要散列的文件的文件名。
- </p>
- </dd>
- </dt>
- <dt>
- <span class="term"><em><code class="parameter">raw_output</code></em></span>
- <dd>
- <p class="para">
- 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。
- </p>
- </dd>
- </dt>
- </dl>
- </p>
- </div>
- <div class="refsect1 returnvalues" id="refsect1-function.sha1-file-returnvalues">
- <h3 class="title">返回值</h3>
- <p class="para">
- 成功返回一个字符串,否则返回 <strong><code>FALSE</code></strong>。
- </p>
- </div>
- <div class="refsect1 examples" id="refsect1-function.sha1-file-examples">
- <h3 class="title">范例</h3>
- <p class="para">
- <div class="example" id="example-4619">
- <p><strong>Example #1 <span class="function"><strong>sha1_file()</strong></span> 范例</strong></p>
- <div class="example-contents">
- <div class="phpcode"><code><span style="color: #000000">
- <span style="color: #0000BB"><?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">) as </span><span style="color: #0000BB">$ent</span><span style="color: #007700">)<br />{<br /> if(</span><span style="color: #0000BB">is_dir</span><span style="color: #007700">(</span><span style="color: #0000BB">$ent</span><span style="color: #007700">))<br /> {<br /> continue;<br /> }<br /><br /> echo </span><span style="color: #0000BB">$ent </span><span style="color: #007700">. </span><span style="color: #DD0000">' (SHA1: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">sha1_file</span><span style="color: #007700">(</span><span style="color: #0000BB">$ent</span><span style="color: #007700">) . </span><span style="color: #DD0000">')'</span><span style="color: #007700">, </span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?></span>
- </span>
- </code></div>
- </div>
- </div>
- </p>
- </div>
- <div class="refsect1 changelog" id="refsect1-function.sha1-file-changelog">
- <h3 class="title">更新日志</h3>
- <p class="para">
- <table class="doctable informaltable">
-
- <thead>
- <tr>
- <th>版本</th>
- <th>说明</th>
- </tr>
- </thead>
- <tbody class="tbody">
- <tr>
- <td>5.0.0</td>
- <td>
- 新增 <em><code class="parameter">raw_output</code></em> 参数。
- </td>
- </tr>
- <tr>
- <td>5.1.0</td>
- <td>
- 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('http://example.com/..')</em>。
- </td>
- </tr>
- </tbody>
-
- </table>
- </p>
- </div>
- <div class="refsect1 seealso" id="refsect1-function.sha1-file-seealso">
- <h3 class="title">参见</h3>
- <p class="para">
- <ul class="simplelist">
- <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>
- <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>
- <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>
- </ul>
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