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106 lines
3.5 KiB
HTML
106 lines
3.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>计算摘要</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.openssl-digest" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">openssl_digest</h1>
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<p class="verinfo">(PHP 5 >= 5.3.0, PHP 7)</p><p class="refpurpose"><span class="refname">openssl_digest</span> — <span class="dc-title">计算摘要</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.openssl-digest-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>openssl_digest</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$method</code></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$raw_output</code><span class="initializer"> = false</span></span>
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] ) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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使用给定的方法计算给定数据的摘要哈希值，并返回一个原始的或16进制编码的字符串。
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</p>
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<div class="warning"><strong class="warning">Warning</strong><p class="simpara">本函数还未编写文档，仅有参数列表。</p></div>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.openssl-digest-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">data</code></dt>
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<dd>
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<p class="para">
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给定的数据。
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</p>
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</dd>
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<dt>
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<code class="parameter">method</code></dt>
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<dd>
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<p class="para">
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要使用的摘要方法，比如 "sha256", 查看 <span class="function"><a href="openssl_get_md_methods.html" class="function">openssl_get_md_methods()</a></span> 函数获取更多可用的摘要方法。
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</p>
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</dd>
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<dt>
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<code class="parameter">raw_output</code></dt>
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<dd>
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<p class="para">
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为 <strong><code>TRUE</code></strong> 时将会返回原始输出数据，否则返回值将会是16进制。
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.openssl-digest-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功，返回摘要哈希值， 或者在失败时返回 <strong><code>FALSE</code></strong>.
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</p>
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</div>
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<div class="refsect1 errors" id="refsect1-function.openssl-digest-errors">
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<h3 class="title">错误／异常</h3>
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<p class="para">
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如果通过<code class="parameter">method</code>参数传递的是一个未知的摘要算法，将会抛出一个<strong><code>E_WARNING</code></strong> 级的错误。
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.openssl-digest-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="openssl_get_md_methods.html" class="function" rel="rdfs-seeAlso">openssl_get_md_methods()</a> - 获取可用的摘要算法</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |