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138 lines
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HTML
138 lines
5.4 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>将 JPEG 图像文件转换为 WBMP 图像文件</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.jpeg2wbmp" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">jpeg2wbmp</h1>
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<p class="verinfo">(PHP 4 >= 4.0.5, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">jpeg2wbmp</span> — <span class="dc-title">将 JPEG 图像文件转换为 WBMP 图像文件</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.jpeg2wbmp-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>jpeg2wbmp</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$jpegname</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$wbmpname</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$dest_height</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$dest_width</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$threshold</code></span>
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) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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将 JPEG 图像文件转换为 WBMP 图像文件。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.jpeg2wbmp-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">jpegname</code></dt>
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<dd>
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<p class="para">
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JPEG 文件的路径。
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</p>
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</dd>
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<dt>
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<code class="parameter">wbmpname</code></dt>
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<dd>
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<p class="para">
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目标 WBMP 文件的路径。
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</p>
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</dd>
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<dt>
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<code class="parameter">dest_height</code></dt>
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<dd>
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<p class="para">
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目标图像高度。
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</p>
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</dd>
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<dt>
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<code class="parameter">dest_width</code></dt>
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<dd>
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<p class="para">
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目标图像宽度。
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</p>
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</dd>
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<dt>
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<code class="parameter">threshold</code></dt>
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<dd>
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<p class="para">
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阈值，在 0 和 8 之间（含）。
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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.jpeg2wbmp-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 <strong><code>TRUE</code></strong>， 或者在失败时返回 <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.jpeg2wbmp-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-3750">
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<p><strong>Example #1 <span class="function"><strong>jpeg2wbmp()</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">// 目标 jpeg 的路径<br /></span><span style="color: #0000BB">$path </span><span style="color: #007700">= </span><span style="color: #DD0000">'./test.jpg'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// 获取图像尺寸<br /></span><span style="color: #0000BB">$image </span><span style="color: #007700">= </span><span style="color: #0000BB">getimagesize</span><span style="color: #007700">(</span><span style="color: #0000BB">$path</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 转换图像<br /></span><span style="color: #0000BB">jpeg2wbmp</span><span style="color: #007700">(</span><span style="color: #0000BB">$path</span><span style="color: #007700">, </span><span style="color: #DD0000">'./test.wbmp'</span><span style="color: #007700">, </span><span style="color: #0000BB">$image</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">], </span><span style="color: #0000BB">$image</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">5</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 notes" id="refsect1-function.jpeg2wbmp-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">WBMP 支持仅在 PHP 与 GD-1.8 或更高版本一起编译时可用。</span></p></blockquote>
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<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">JPEG 支持仅在 PHP 与 GD-1.8 或更高版本一起编译时可用。</span></p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.jpeg2wbmp-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="png2wbmp.html" class="function" rel="rdfs-seeAlso">png2wbmp()</a> - 将 PNG 图像文件转换为 WBMP 图像文件</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> |