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306 lines
13 KiB
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<!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>解析一个配置文件</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.parse-ini-file" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">parse_ini_file</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">parse_ini_file</span> — <span class="dc-title">解析一个配置文件</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.parse-ini-file-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>parse_ini_file</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$process_sections</code><span class="initializer"> = false</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$scanner_mode</code><span class="initializer"> = INI_SCANNER_NORMAL</span></span>
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]] ) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>parse_ini_file()</strong></span> 载入一个由
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<code class="parameter">filename</code> 指定的 ini
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文件，并将其中的设置作为一个联合数组返回。
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</p>
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<p class="para">
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ini 文件的结构和 <var class="filename">php.ini</var> 的相似。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.parse-ini-file-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">filename</code></dt>
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<dd>
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<p class="para">
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要解析的 ini 文件的文件名。
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</p>
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</dd>
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<dt>
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<code class="parameter">process_sections</code></dt>
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<dd>
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<p class="para">
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如果将最后的
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<code class="parameter">process_sections</code> 参数设为
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<strong><code>TRUE</code></strong>，将得到一个多维数组，包括了配置文件中每一节的名称和设置。<code class="parameter">process_sections</code>
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的默认值是 <strong><code>FALSE</code></strong>。
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</p>
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</dd>
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<dt>
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<code class="parameter">scanner_mode</code></dt>
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<dd>
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<p class="para">
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Can either be <strong><code>INI_SCANNER_NORMAL</code></strong> (default) or
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<strong><code>INI_SCANNER_RAW</code></strong>. If <strong><code>INI_SCANNER_RAW</code></strong>
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is supplied, then option values will not be parsed.
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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.parse-ini-file-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时以关联数组 <span class="type"><a href="language.types.array.html" class="type array">array</a></span> 返回设置，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 changelog" id="refsect1-function.parse-ini-file-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>5.3.0</td>
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<td>
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Added optional <code class="parameter">scanner_mode</code> parameter.
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Single quotes may now be used around variable assignments.
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Hash marks (<em>#</em>) may no longer be used as comments
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and will throw a deprecation warning if used.
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</td>
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</tr>
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<tr>
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<td>5.2.7</td>
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<td>
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On syntax error this function will return <strong><code>FALSE</code></strong> rather than an empty
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array.
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</td>
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</tr>
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<tr>
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<td>5.2.4</td>
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<td>
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由数字组成的键名和小节名会被 PHP 当作<a href="language.types.integer.html" class="link">整数</a>来处理，因此以
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0 开头的数字会被当作八进制而以 0x 开头的会被当作十六进制。
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</td>
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</tr>
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<tr>
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<td>5.0.0</td>
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<td>
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该函数也开始处理选项值内的新行。
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</td>
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</tr>
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<tr>
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<td>4.2.1</td>
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<td>
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本函数也开始受到<a href="ini.sect.safe-mode.html#ini.safe-mode" class="link">安全模式</a>和
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<a href="ini.core.html#ini.open-basedir" class="link">open_basedir</a> 的影响。
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.parse-ini-file-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-2827">
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<p><strong>Example #1 <var class="filename">sample.ini</var> 的内容</strong></p>
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<div class="example-contents">
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<div class="cdata"><pre>
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; This is a sample configuration file
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; Comments start with ';', as in php.ini
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[first_section]
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one = 1
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five = 5
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animal = BIRD
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[second_section]
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path = "/usr/local/bin"
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URL = "http://www.example.com/~username"
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[third_section]
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phpversion[] = "5.0"
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phpversion[] = "5.1"
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phpversion[] = "5.2"
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phpversion[] = "5.3"
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</pre></div>
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</div>
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</div>
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<div class="example" id="example-2828">
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<p><strong>Example #2 <span class="function"><strong>parse_ini_file()</strong></span> 例子</strong></p>
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<div class="example-contents"><p>
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<a href="language.constants.html" class="link">常量</a>也可以在 ini
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文件中被解析，因此如果在运行 <span class="function"><strong>parse_ini_file()</strong></span>
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之前定义了常量作为 ini 的值，将会被集成到结果中去。只有 ini
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的值会被求值。例如：
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</p></div>
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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 /><br />define</span><span style="color: #007700">(</span><span style="color: #DD0000">'BIRD'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Dodo bird'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Parse without sections<br /></span><span style="color: #0000BB">$ini_array </span><span style="color: #007700">= </span><span style="color: #0000BB">parse_ini_file</span><span style="color: #007700">(</span><span style="color: #DD0000">"sample.ini"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$ini_array</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Parse with sections<br /></span><span style="color: #0000BB">$ini_array </span><span style="color: #007700">= </span><span style="color: #0000BB">parse_ini_file</span><span style="color: #007700">(</span><span style="color: #DD0000">"sample.ini"</span><span style="color: #007700">, </span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$ini_array</span><span style="color: #007700">);<br /><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 class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Array
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(
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[one] => 1
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[five] => 5
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[animal] => Dodo bird
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[path] => /usr/local/bin
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[URL] => http://www.example.com/~username
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[phpversion] => Array
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(
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[0] => 5.0
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[1] => 5.1
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[2] => 5.2
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[3] => 5.3
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)
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)
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Array
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(
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[first_section] => Array
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(
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[one] => 1
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[five] => 5
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[animal] => Dodo bird
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)
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[second_section] => Array
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(
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[path] => /usr/local/bin
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[URL] => http://www.example.com/~username
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)
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[third_section] => Array
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(
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[phpversion] => Array
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(
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[0] => 5.0
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[1] => 5.1
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[2] => 5.2
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[3] => 5.3
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)
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)
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)
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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-2829">
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<p><strong>Example #3 <span class="function"><strong>parse_ini_file()</strong></span> parsing a php.ini file</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">// A simple function used for comparing the results below<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">yesno</span><span style="color: #007700">(</span><span style="color: #0000BB">$expression</span><span style="color: #007700">)<br />{<br /> return(</span><span style="color: #0000BB">$expression </span><span style="color: #007700">? </span><span style="color: #DD0000">'Yes' </span><span style="color: #007700">: </span><span style="color: #DD0000">'No'</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">// Get the path to php.ini using the php_ini_loaded_file() <br />// function available as of PHP 5.2.4<br /></span><span style="color: #0000BB">$ini_path </span><span style="color: #007700">= </span><span style="color: #0000BB">php_ini_loaded_file</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// Parse php.ini<br /></span><span style="color: #0000BB">$ini </span><span style="color: #007700">= </span><span style="color: #0000BB">parse_ini_file</span><span style="color: #007700">(</span><span style="color: #0000BB">$ini_path</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Print and compare the values, note that using get_cfg_var()<br />// will give the same results for parsed and loaded here<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'(parsed) magic_quotes_gpc = ' </span><span style="color: #007700">. </span><span style="color: #0000BB">yesno</span><span style="color: #007700">(</span><span style="color: #0000BB">$ini</span><span style="color: #007700">[</span><span style="color: #DD0000">'magic_quotes_gpc'</span><span style="color: #007700">]) . </span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'(loaded) magic_quotes_gpc = ' </span><span style="color: #007700">. </span><span style="color: #0000BB">yesno</span><span style="color: #007700">(</span><span style="color: #0000BB">get_cfg_var</span><span style="color: #007700">(</span><span style="color: #DD0000">'magic_quotes_gpc'</span><span style="color: #007700">)) . </span><span style="color: #0000BB">PHP_EOL</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 class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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(parsed) magic_quotes_gpc = Yes
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(loaded) magic_quotes_gpc = Yes
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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 notes" id="refsect1-function.parse-ini-file-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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本函数和 <var class="filename">php.ini</var>
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文件没有关系，该文件在运行脚本时就已经处理过了。本函数可以用来读取你自己的应用程序的配置文件。
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</p>
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</p></blockquote>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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如果 ini 文件中的值包含任何非字母数字的字符，需要将其括在双引号中（"）。
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</p>
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</p></blockquote>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<span class="simpara">
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有些保留字不能作为 ini 文件中的键名，包括：null，yes，no，true 和 false。值为
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null，no 和 false 等效于 ""，值为 yes 和 true 等效于 "1"。字符
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<em>{}|&~![()"</em> 也不能用在键名的任何地方，而且这些字符在选项值中有着特殊的意义。
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</span>
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</p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.parse-ini-file-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="parse_ini_string.html" class="function" rel="rdfs-seeAlso">parse_ini_string()</a> - 解析配置字符串</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> |