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108 lines
4.4 KiB
HTML
108 lines
4.4 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>为一个配置选项设置值</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.ini-set" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">ini_set</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">ini_set</span> — <span class="dc-title">为一个配置选项设置值</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.ini-set-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>ini_set</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$varname</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$newvalue</code></span>
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) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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设置指定配置选项的值。这个选项会在脚本运行时保持新的值，并在脚本结束时恢复。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.ini-set-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">varname</code></dt>
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<dd>
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<p class="para">
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</p>
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<p class="para">
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不是所有有效的选项都能够用 <span class="function"><strong>ini_set()</strong></span> 来改变的。
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这里有个有效选项的清单<a href="ini.list.html" class="link">附录</a>。
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</p>
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</dd>
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<dt>
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<code class="parameter">newvalue</code></dt>
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<dd>
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<p class="para">
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选项新的值。
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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.ini-set-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回旧的值，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 examples" id="refsect1-function.ini-set-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-516">
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<p><strong>Example #1 设置一个 ini 选项</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: #007700">echo </span><span style="color: #0000BB">ini_get</span><span style="color: #007700">(</span><span style="color: #DD0000">'display_errors'</span><span style="color: #007700">);<br /><br />if (!</span><span style="color: #0000BB">ini_get</span><span style="color: #007700">(</span><span style="color: #DD0000">'display_errors'</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">ini_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'display_errors'</span><span style="color: #007700">, </span><span style="color: #DD0000">'1'</span><span style="color: #007700">);<br />}<br /><br />echo </span><span style="color: #0000BB">ini_get</span><span style="color: #007700">(</span><span style="color: #DD0000">'display_errors'</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 class="refsect1 seealso" id="refsect1-function.ini-set-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="get_cfg_var.html" class="function" rel="rdfs-seeAlso">get_cfg_var()</a> - 获取 PHP 配置选项的值</span></li>
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<li class="member"><span class="function"><a href="ini_get.html" class="function" rel="rdfs-seeAlso">ini_get()</a> - 获取一个配置选项的值</span></li>
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<li class="member"><span class="function"><a href="ini_get_all.html" class="function" rel="rdfs-seeAlso">ini_get_all()</a> - 获取所有配置选项</span></li>
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<li class="member"><span class="function"><a href="ini_restore.html" class="function" rel="rdfs-seeAlso">ini_restore()</a> - 恢复配置选项的值</span></li>
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<li class="member">
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<a href="configuration.changes.html" class="link">如何改变配置选项</a>
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</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> |