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47 lines
4.8 KiB
HTML
47 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>新建一个基于调色板的图像</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.imagecreate" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">imagecreate</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">imagecreate</span> — <span class="dc-title">新建一个基于调色板的图像</span></p>
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</div>
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<div class="refsect1 unknown-seealsp" id="refsect1-function.imagecreate-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>imagecreate</strong></span>
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( <span class="methodparam"><span class="type">int</span> <code class="parameter">$x_size</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$y_size</code></span>
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) : <span class="type">resource</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>imagecreate()</strong></span> 返回一个图像标识符，代表了一幅大小为
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<code class="parameter">x_size</code> 和 <code class="parameter">y_size</code> 的空白图像。
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</p>
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<p class="para">
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推荐使用 <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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<div class="example" id="example-3676">
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<p><strong>Example #1 新建一个新的 GD 图像流并输出图像</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 />header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-type: image/png"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= @</span><span style="color: #0000BB">imagecreate</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">)<br /> or die(</span><span style="color: #DD0000">"Cannot Initialize new GD image stream"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$background_color </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$text_color </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">233</span><span style="color: #007700">, </span><span style="color: #0000BB">14</span><span style="color: #007700">, </span><span style="color: #0000BB">91</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagestring</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #DD0000">"A Simple Text String"</span><span style="color: #007700">, </span><span style="color: #0000BB">$text_color</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</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="imagedestroy.html" class="function">imagedestroy()</a></span> 和
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<span class="function"><a href="imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |