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101 lines
5.1 KiB
HTML
101 lines
5.1 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/获取替代字符</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-substitute-character" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">mb_substitute_character</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_substitute_character</span> — <span class="dc-title">设置/获取替代字符</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.mb-substitute-character-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_substitute_character</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">$substchar</code><span class="initializer"> = mb_substitute_character()</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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当输入字符的编码是无效的，或者字符代码不存在于输出的字符编码中时，可以为其指定一个替代字符。
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无效字符可以被替换为 <strong><code>NULL</code></strong>（不输出）、<span class="type"><a href="language.types.string.html" class="type string">string</a></span> 或者 <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span> 值（Unicode 字符代码的值）。
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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_convert_encoding.html" class="function">mb_convert_encoding()</a></span>、
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<span class="function"><a href="mb_convert_variables.html" class="function">mb_convert_variables()</a></span>、
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<span class="function"><a href="mb_output_handler.html" class="function">mb_output_handler()</a></span>
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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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</div>
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<div class="refsect1 parameters" id="refsect1-function.mb-substitute-character-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">substchar</code></dt>
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<dd>
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<p class="para">
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指定 Unicode 值为一个 <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>，或者是以下<span class="type"><span class="type 字符串">字符串</span></span>中的一个：
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<ul class="itemizedlist">
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<li class="listitem">
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<span class="simpara">
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<em>"none"</em>:：不输出
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<em>"long"</em>：输出字符代码的值（比如：<em>U+3000</em>、<em>JIS+7E7E</em>）
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<em>"entity"</em>：输出字符的实体（比如：<em>&#x200;</em>）
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</span>
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</li>
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</ul>
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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-substitute-character-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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如果设置了 <code class="parameter">substchar</code>，在成功时返回 <strong><code>TRUE</code></strong>，失败时返回 <strong><code>FALSE</code></strong>。
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如果没有设置 <code class="parameter">substchar</code>，它将返回当前设置。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.mb-substitute-character-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-3197">
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<p><strong>Example #1 <span class="function"><strong>mb_substitute_character()</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">/* 设置为 Unicode U+3013 (GETA MARK) */<br /></span><span style="color: #0000BB">mb_substitute_character</span><span style="color: #007700">(</span><span style="color: #0000BB">0x3013</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* 设置十六进制格式 */<br /></span><span style="color: #0000BB">mb_substitute_character</span><span style="color: #007700">(</span><span style="color: #DD0000">"long"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* 显示当前设置 */<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">mb_substitute_character</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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</div>
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</div></div></div></body></html> |