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155 lines
7.8 KiB
HTML
155 lines
7.8 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>Flips an image using a given mode</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.imageflip" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">imageflip</h1>
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<p class="verinfo">(PHP 5 >= 5.5.0, PHP 7)</p><p class="refpurpose"><span class="refname">imageflip</span> — <span class="dc-title">Flips an image using a given mode</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.imageflip-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>imageflip</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$mode</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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Flips the <code class="parameter">image</code> image using the given
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<code class="parameter">mode</code>.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.imageflip-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">image</code></dt>
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<dd>
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<p class="para">由图象创建函数(例如<span class="function"><a href="imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>)返回的图象资源。</p></dd>
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<dt>
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<code class="parameter">mode</code></dt>
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<dd>
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<p class="para">
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Flip mode, this can be one of the <strong><code>IMG_FLIP_*</code></strong> constants:
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</p>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>Constant</th>
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<th>Meaning</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td><strong><code>IMG_FLIP_HORIZONTAL</code></strong></td>
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<td>
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Flips the image horizontally.
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</td>
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</tr>
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<tr>
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<td><strong><code>IMG_FLIP_VERTICAL</code></strong></td>
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<td>
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Flips the image vertically.
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</td>
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</tr>
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<tr>
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<td><strong><code>IMG_FLIP_BOTH</code></strong></td>
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<td>
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Flips the image both horizontally and vertically.
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</td>
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</tr>
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</tbody>
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</table>
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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.imageflip-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.imageflip-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-3705">
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<p><strong>Example #1 Flips an image vertically</strong></p>
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<div class="example-contents"><p>
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This example uses the <strong><code>IMG_FLIP_VERTICAL</code></strong>
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constant.
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</p></div>
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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">// File<br /></span><span style="color: #0000BB">$filename </span><span style="color: #007700">= </span><span style="color: #DD0000">'phplogo.png'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Content type<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: image/png'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Load<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Flip it vertically<br /></span><span style="color: #0000BB">imageflip</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">IMG_FLIP_VERTICAL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Output<br /></span><span style="color: #0000BB">imagejpeg</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 class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="mediaobject">
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<div class="imageobject">
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<img src="images/21009b70229598c6a80eef8b45bf282b-imageflipvertical.png" alt="Output of example: Vertically flipped image" width="120" height="67" />
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</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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<div class="example" id="example-3706">
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<p><strong>Example #2 Flips the image horizontally</strong></p>
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<div class="example-contents"><p>
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This example uses the <strong><code>IMG_FLIP_HORIZONTAL</code></strong> constant.
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</p></div>
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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">// File<br /></span><span style="color: #0000BB">$filename </span><span style="color: #007700">= </span><span style="color: #DD0000">'phplogo.png'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// Content type<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">'Content-type: image/png'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Load<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Flip it horizontally<br /></span><span style="color: #0000BB">imageflip</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">IMG_FLIP_HORIZONTAL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Output<br /></span><span style="color: #0000BB">imagejpeg</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 class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="mediaobject">
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<div class="imageobject">
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<img src="images/21009b70229598c6a80eef8b45bf282b-imagefliphorizontal.png" alt="Output of example: Horizontally flipped image" width="120" height="67" />
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</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></div></div></body></html> |