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133 lines
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HTML
133 lines
6.9 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>设置/获取 字符编码的检测顺序</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.mb-detect-order" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">mb_detect_order</h1>
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<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">mb_detect_order</span> — <span class="dc-title">设置/获取 字符编码的检测顺序</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.mb-detect-order-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>mb_detect_order</strong></span>
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([ <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$encoding_list</code><span class="initializer"> = mb_detect_order()</span></span>
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] ) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>
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<p class="para rdfs-comment">
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为编码列表 <code class="parameter">encoding_list</code> 设置自动检测字符编码的顺序。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.mb-detect-order-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">encoding_list</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">encoding_list</code> 是一个 <span class="type"><a href="language.types.array.html" class="type array">array</a></span> 或者逗号分隔的字符编码列表。
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参见<a href="mbstring.supported_encodings.html" class="link">支持的编码</a>。
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</p>
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<p class="para">
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如果省略了 <code class="parameter">encoding_list</code> 参数，它将返回当前字符编码检测顺序的数组。
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</p>
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<p class="para">
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该设置会影响 <span class="function"><a href="mb_detect_encoding.html" class="function">mb_detect_encoding()</a></span> 和 <span class="function"><a href="mb_send_mail.html" class="function">mb_send_mail()</a></span>。
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</p>
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<p class="para">
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<em>mbstring</em> 当前实现了以下编码检测筛选器。
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如有以下编码列表的无效字节序列，编码的检测将会失败。
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</p>
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<span class="simpara">
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<em>UTF-8</em>, <em>UTF-7</em>,
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<em>ASCII</em>,
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<em>EUC-JP</em>,<em>SJIS</em>,
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<em>eucJP-win</em>, <em>SJIS-win</em>,
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<em>JIS</em>, <em>ISO-2022-JP</em>
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</span>
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<p class="para">
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对于 <em>ISO-8859-*</em>，<em>mbstring</em>
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总是检测为 <em>ISO-8859-*</em>。
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</p>
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<p class="para">
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对于 <em>UTF-16</em>、<em>UTF-32</em>、
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<em>UCS2</em> 和 <em>UCS4</em>，编码检测总是会失败。
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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.mb-detect-order-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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设置编码检测顺序时候，成功时返回 <strong><code>TRUE</code></strong>，识别时候返回 <strong><code>FALSE</code></strong>。
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</p>
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<p class="para">
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在获取编码检测顺序的时候，会返回排序过的编码数组。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.mb-detect-order-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-3180">
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<p><strong>Example #1 <span class="function"><strong>mb_detect_order()</strong></span> 例子</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">/* 为检测顺序设置枚举列表 */<br /></span><span style="color: #0000BB">mb_detect_order</span><span style="color: #007700">(</span><span style="color: #DD0000">"eucjp-win,sjis-win,UTF-8"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* 通过数组设置检测顺序 */<br /></span><span style="color: #0000BB">$ary</span><span style="color: #007700">[] = </span><span style="color: #DD0000">"ASCII"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$ary</span><span style="color: #007700">[] = </span><span style="color: #DD0000">"JIS"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$ary</span><span style="color: #007700">[] = </span><span style="color: #DD0000">"EUC-JP"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">mb_detect_order</span><span style="color: #007700">(</span><span style="color: #0000BB">$ary</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* 显示当前的检测顺序 */<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">implode</span><span style="color: #007700">(</span><span style="color: #DD0000">", "</span><span style="color: #007700">, </span><span style="color: #0000BB">mb_detect_order</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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<p class="para">
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<div class="example" id="example-3181">
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<p><strong>Example #2 案例展示了无效的检测顺序</strong></p>
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<div class="example-contents">
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<div class="cdata"><pre>
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; 总是检测为 ISO-8859-1
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detect_order = ISO-8859-1, UTF-8
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; 总是检测为 UTF-8，由于 ASCII/UTF-7 的值对 UTF-8 是有效的
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detect_order = UTF-8, ASCII, UTF-7
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.mb-detect-order-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="mb_internal_encoding.html" class="function" rel="rdfs-seeAlso">mb_internal_encoding()</a> - 设置/获取内部字符编码</span></li>
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<li class="member"><span class="function"><a href="mb_http_input.html" class="function" rel="rdfs-seeAlso">mb_http_input()</a> - 检测 HTTP 输入字符编码</span></li>
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<li class="member"><span class="function"><a href="mb_http_output.html" class="function" rel="rdfs-seeAlso">mb_http_output()</a> - 设置/获取 HTTP 输出字符编码</span></li>
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<li class="member"><span class="function"><a href="mb_send_mail.html" class="function" rel="rdfs-seeAlso">mb_send_mail()</a> - 发送编码过的邮件</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> |