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92 lines
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HTML
92 lines
4.8 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>使一个字符串的第一个字符小写</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.lcfirst" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">lcfirst</h1>
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<p class="verinfo">(PHP 5 >= 5.3.0, PHP 7)</p><p class="refpurpose"><span class="refname">lcfirst</span> — <span class="dc-title">使一个字符串的第一个字符小写</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.lcfirst-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>lcfirst</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$str</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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返回第一个字母小写的 <code class="parameter">str</code> ，如果是字母的话。
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</p>
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<p class="para">
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需要注意的是“字母”是由当前语言区域决定的。比如，在默认的“C”区域像日耳曼语系中的元音变音a (ä) 将不会被转换。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.lcfirst-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">str</code></dt>
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<dd>
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<p class="para">
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输入的字符串。
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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.lcfirst-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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返回转换后的字符串。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.lcfirst-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-5916">
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<p><strong>Example #1 <span class="function"><strong>lcfirst()</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 />$foo </span><span style="color: #007700">= </span><span style="color: #DD0000">'HelloWorld'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$foo </span><span style="color: #007700">= </span><span style="color: #0000BB">lcfirst</span><span style="color: #007700">(</span><span style="color: #0000BB">$foo</span><span style="color: #007700">); </span><span style="color: #FF8000">// helloWorld<br /><br /></span><span style="color: #0000BB">$bar </span><span style="color: #007700">= </span><span style="color: #DD0000">'HELLO WORLD!'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$bar </span><span style="color: #007700">= </span><span style="color: #0000BB">lcfirst</span><span style="color: #007700">(</span><span style="color: #0000BB">$bar</span><span style="color: #007700">); </span><span style="color: #FF8000">// hELLO WORLD!<br /></span><span style="color: #0000BB">$bar </span><span style="color: #007700">= </span><span style="color: #0000BB">lcfirst</span><span style="color: #007700">(</span><span style="color: #0000BB">strtoupper</span><span style="color: #007700">(</span><span style="color: #0000BB">$bar</span><span style="color: #007700">)); </span><span style="color: #FF8000">// hELLO WORLD!<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.lcfirst-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="ucfirst.html" class="function" rel="rdfs-seeAlso">ucfirst()</a> - 将字符串的首字母转换为大写</span></li>
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<li class="member"><span class="function"><a href="strtolower.html" class="function" rel="rdfs-seeAlso">strtolower()</a> - 将字符串转化为小写</span></li>
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<li class="member"><span class="function"><a href="strtoupper.html" class="function" rel="rdfs-seeAlso">strtoupper()</a> - 将字符串转化为大写</span></li>
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<li class="member"><span class="function"><a href="ucwords.html" class="function" rel="rdfs-seeAlso">ucwords()</a> - 将字符串中每个单词的首字母转换为大写</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> |