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<!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>Crop an image to the given rectangle</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.imagecrop" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">imagecrop</h1>
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<p class="verinfo">(PHP 5 >= 5.5.0, PHP 7)</p><p class="refpurpose"><span class="refname">imagecrop</span> — <span class="dc-title">Crop an image to the given rectangle</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.imagecrop-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>imagecrop</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter">$rect</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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Crops an image to the given rectangular area and returns the resulting image.
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The given <code class="parameter">image</code> is not modified.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.imagecrop-parameters">
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<h3 class="title">参数</h3>
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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">rect</code></dt>
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<dd>
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<p class="para">
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The cropping rectangle as <span class="type"><a href="language.types.array.html" class="type array">array</a></span> with keys
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<em>x</em>, <em>y</em>, <em>width</em> and
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<em>height</em>.
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</p>
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</dd>
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</dl>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.imagecrop-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Return cropped image resource on success 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.imagecrop-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-3690">
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<p><strong>Example #1 <span class="function"><strong>imagecrop()</strong></span> example</strong></p>
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<div class="example-contents"><p>
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This example shows how to crop an image to a square area.
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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 />$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #DD0000">'example.png'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$size </span><span style="color: #007700">= </span><span style="color: #0000BB">min</span><span style="color: #007700">(</span><span style="color: #0000BB">imagesx</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">), </span><span style="color: #0000BB">imagesy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$im2 </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecrop</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, [</span><span style="color: #DD0000">'x' </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'y' </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'width' </span><span style="color: #007700">=> </span><span style="color: #0000BB">$size</span><span style="color: #007700">, </span><span style="color: #DD0000">'height' </span><span style="color: #007700">=> </span><span style="color: #0000BB">$size</span><span style="color: #007700">]);<br />if (</span><span style="color: #0000BB">$im2 </span><span style="color: #007700">!== </span><span style="color: #0000BB">FALSE</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">, </span><span style="color: #DD0000">'example-cropped.png'</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$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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</div>
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<div class="refsect1 seealso" id="refsect1-function.imagecrop-seealso">
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<h3 class="title">参见</h3>
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="imagecropauto.html" class="function" rel="rdfs-seeAlso">imagecropauto()</a> - Crop an image automatically using one of the available modes</span></li>
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</ul>
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</div>
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<!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>Crop an image to the given rectangle</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.imagecrop" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">imagecrop</h1>
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<p class="verinfo">(PHP 5 >= 5.5.0, PHP 7)</p><p class="refpurpose"><span class="refname">imagecrop</span> — <span class="dc-title">Crop an image to the given rectangle</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.imagecrop-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>imagecrop</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$image</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter">$rect</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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Crops an image to the given rectangular area and returns the resulting image.
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The given <code class="parameter">image</code> is not modified.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.imagecrop-parameters">
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<h3 class="title">参数</h3>
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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">rect</code></dt>
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<dd>
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<p class="para">
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The cropping rectangle as <span class="type"><a href="language.types.array.html" class="type array">array</a></span> with keys
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<em>x</em>, <em>y</em>, <em>width</em> and
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<em>height</em>.
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</p>
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</dd>
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</dl>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.imagecrop-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Return cropped image resource on success 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.imagecrop-examples">
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<h3 class="title">范例</h3>
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<div class="example" id="example-3690">
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<p><strong>Example #1 <span class="function"><strong>imagecrop()</strong></span> example</strong></p>
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<div class="example-contents"><p>
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This example shows how to crop an image to a square area.
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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 />$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatefrompng</span><span style="color: #007700">(</span><span style="color: #DD0000">'example.png'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$size </span><span style="color: #007700">= </span><span style="color: #0000BB">min</span><span style="color: #007700">(</span><span style="color: #0000BB">imagesx</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">), </span><span style="color: #0000BB">imagesy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$im2 </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecrop</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, [</span><span style="color: #DD0000">'x' </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'y' </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'width' </span><span style="color: #007700">=> </span><span style="color: #0000BB">$size</span><span style="color: #007700">, </span><span style="color: #DD0000">'height' </span><span style="color: #007700">=> </span><span style="color: #0000BB">$size</span><span style="color: #007700">]);<br />if (</span><span style="color: #0000BB">$im2 </span><span style="color: #007700">!== </span><span style="color: #0000BB">FALSE</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">, </span><span style="color: #DD0000">'example-cropped.png'</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im2</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$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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</div>
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<div class="refsect1 seealso" id="refsect1-function.imagecrop-seealso">
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<h3 class="title">参见</h3>
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="imagecropauto.html" class="function" rel="rdfs-seeAlso">imagecropauto()</a> - Crop an image automatically using one of the available modes</span></li>
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</ul>
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</div>
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</div></div></div></body></html>
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