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51 lines
5.3 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>水平地画一行字符串</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.imagestring" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">imagestring</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">imagestring</span> — <span class="dc-title">水平地画一行字符串</span></p>
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</div>
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<div class="refsect1 unknown-unknown-noteu" id="refsect1-function.imagestring-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>imagestring</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$font</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$x</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$y</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$s</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$col</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>imagestring()</strong></span> 用 <code class="parameter">col</code>
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颜色将字符串 <code class="parameter">s</code> 画到 <code class="parameter">image</code>
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所代表的图像的 <code class="parameter">x</code>，<code class="parameter">y</code>
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坐标处（这是字符串左上角坐标，整幅图像的左上角为 0，0）。如果
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<code class="parameter">font</code> 是 1，2，3，4 或 5，则使用内置字体。
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</p>
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<p class="para">
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<div class="example" id="example-3739">
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<p><strong>Example #1 <span class="function"><strong>imagestring()</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">// 建立一幅 100X30 的图像<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreate</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">30</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 白色背景和蓝色文本<br /></span><span style="color: #0000BB">$bg </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$textcolor </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 把字符串写在图像左上角<br /></span><span style="color: #0000BB">imagestring</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"Hello world!"</span><span style="color: #007700">, </span><span style="color: #0000BB">$textcolor</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 输出图像<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-type: image/png"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$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="imageloadfont.html" class="function">imageloadfont()</a></span> 和
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<span class="function"><a href="imagettftext.html" class="function">imagettftext()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |