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175 lines
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HTML
175 lines
8.0 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>打断字符串为指定数量的字串</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.wordwrap" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">wordwrap</h1>
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<p class="verinfo">(PHP 4 >= 4.0.2, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">wordwrap</span> — <span class="dc-title">打断字符串为指定数量的字串</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.wordwrap-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>wordwrap</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$str</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$width</code><span class="initializer"> = 75</span></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$break</code><span class="initializer"> = "\n"</span></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$cut</code><span class="initializer"> = <strong><code>FALSE</code></strong></span></span>
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]]] ) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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使用字符串断点将字符串打断为指定数量的字串。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.wordwrap-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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输入字符串。
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</p>
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</dd>
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<dt>
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<code class="parameter">width</code></dt>
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<dd>
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<p class="para">
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列宽度。
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</p>
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</dd>
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<dt>
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<code class="parameter">break</code></dt>
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<dd>
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<p class="para">
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使用可选的 <code class="parameter">break</code> 参数打断字符串。
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</p>
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</dd>
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<dt>
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<code class="parameter">cut</code></dt>
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<dd>
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<p class="para">
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如果 <code class="parameter">cut</code> 设置为 <strong><code>TRUE</code></strong>，字符串总是在指定的 <code class="parameter">width</code> 或者之前位置被打断。因此，如果有的单词宽度超过了给定的宽度，它将被分隔开来。（参见第二个范例）。
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当它是 <strong><code>FALSE</code></strong> ，函数不会分割单词，哪怕 <code class="parameter">width</code> 小于单词宽度。
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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.wordwrap-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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返回打断后的字符串。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.wordwrap-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-6008">
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<p><strong>Example #1 <span class="function"><strong>wordwrap()</strong></span> 范例</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 />$text </span><span style="color: #007700">= </span><span style="color: #DD0000">"The quick brown fox jumped over the lazy dog."</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$newtext </span><span style="color: #007700">= </span><span style="color: #0000BB">wordwrap</span><span style="color: #007700">(</span><span style="color: #0000BB">$text</span><span style="color: #007700">, </span><span style="color: #0000BB">20</span><span style="color: #007700">, </span><span style="color: #DD0000">"<br />\n"</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">$newtext</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>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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The quick brown fox<br />
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jumped over the lazy<br />
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dog.
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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-6009">
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<p><strong>Example #2 <span class="function"><strong>wordwrap()</strong></span> 范例</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 />$text </span><span style="color: #007700">= </span><span style="color: #DD0000">"A very long woooooooooooord."</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$newtext </span><span style="color: #007700">= </span><span style="color: #0000BB">wordwrap</span><span style="color: #007700">(</span><span style="color: #0000BB">$text</span><span style="color: #007700">, </span><span style="color: #0000BB">8</span><span style="color: #007700">, </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$newtext</span><span style="color: #DD0000">\n"</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>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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A very
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long
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wooooooo
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ooooord.
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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-6010">
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<p><strong>Example #3 <span class="function"><strong>wordwrap()</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 />$text </span><span style="color: #007700">= </span><span style="color: #DD0000">"A very long woooooooooooooooooord. and something"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$newtext </span><span style="color: #007700">= </span><span style="color: #0000BB">wordwrap</span><span style="color: #007700">(</span><span style="color: #0000BB">$text</span><span style="color: #007700">, </span><span style="color: #0000BB">8</span><span style="color: #007700">, </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">false</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$newtext</span><span style="color: #DD0000">\n"</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>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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A very
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long
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woooooooooooooooooord.
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and
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something
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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.wordwrap-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="nl2br.html" class="function" rel="rdfs-seeAlso">nl2br()</a> - 在字符串所有新行之前插入 HTML 换行标记</span></li>
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<li class="member"><span class="function"><a href="chunk_split.html" class="function" rel="rdfs-seeAlso">chunk_split()</a> - 将字符串分割成小块</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> |