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56 lines
3.9 KiB
HTML
56 lines
3.9 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>以 WBMP 格式将图像输出到浏览器或文件</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.image2wbmp" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">image2wbmp</h1>
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<p class="verinfo">(PHP 4 >= 4.0.5, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">image2wbmp</span> — <span class="dc-title">以 WBMP 格式将图像输出到浏览器或文件</span></p>
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</div>
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<div class="refsect1 unknown-unknown-noteu" id="refsect1-function.image2wbmp-unknown-unknown-noteu">
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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>image2wbmp</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$threshold</code></span>
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]] ) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>image2wbmp()</strong></span> 从
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<code class="parameter">image</code> 图像创建一个名为 <code class="parameter">filename</code> 的
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<acronym title="Wireless Bitmap">WBMP</acronym> 文件。<code class="parameter">image</code>
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参数是某个图像创建函数的返回值，例如 <span class="function"><a href="imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>。
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</p>
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<p class="para">
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<code class="parameter">filename</code> 参数是可选项，如果省略，则直接将原图像流输出。通过用
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<span class="function"><a href="header.html" class="function">header()</a></span> 发送 <acronym>image/vnd.wap.wbmp</acronym>
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的 Content-type，可以创建直接输出 WBMP 图像的 PHP 脚本。
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</p>
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<p class="para">
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<div class="example" id="example-3652">
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<p><strong>Example #1 <span class="function"><strong>image2wbmp()</strong></span> 例子</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$file </span><span style="color: #007700">= </span><span style="color: #DD0000">'php.jpg'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$image </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">image_type_to_mime</span><span style="color: #007700">(</span><span style="color: #0000BB">IMAGETYPE_WBMP</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">image2wbmp</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">); </span><span style="color: #FF8000">// output the stream directly<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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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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WBMP 支持仅在 PHP 编译时加入了 GD-1.8 或更高版本时可用。
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</p>
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</p></blockquote>
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<p class="para">
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参见 <span class="function"><a href="imagewbmp.html" class="function">imagewbmp()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |