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42 lines
2.5 KiB
HTML
42 lines
2.5 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 PNG 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.imagepng" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">imagepng</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">imagepng</span> — <span class="dc-title">以 PNG 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-seealsp" id="refsect1-function.imagepng-unknown-seealsp">
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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>imagepng</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="type">bool</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>imagepng()</strong></span> 将 GD 图像流（<code class="parameter">image</code>）以
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PNG 格式输出到标准输出（通常为浏览器），或者如果用
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<code class="parameter">filename</code> 给出了文件名则将其输出到该文件。
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<div class="informalexample">
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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 />$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #DD0000">"test.png"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</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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<p class="para">
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参见 <span class="function"><a href="imagegif.html" class="function">imagegif()</a></span>，<span class="function"><a href="imagewbmp.html" class="function">imagewbmp()</a></span>，<span class="function"><a href="imagejpeg.html" class="function">imagejpeg()</a></span>
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和 <span class="function"><a href="imagetypes.html" class="function">imagetypes()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |