function.imagecopyresampled.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Copy and resize part of an image with resampling</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagecopymergegray.html">imagecopymergegray</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagecopyresized.html">imagecopyresized</a></div> <div class="up"><a href="ref.image.html">GD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.imagecopyresampled" class="refentry"> <div class="refnamediv"> <h1 class="refname">imagecopyresampled</h1> <p class="verinfo">(PHP 4 >= 4.0.6, PHP 5)</p><p class="refpurpose"><span class="refname">imagecopyresampled</span> — <span class="dc-title">Copy and resize part of an image with resampling</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>imagecopyresampled</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$dst_image</tt></span> , <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$src_image</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$dst_x</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$dst_y</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$src_x</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$src_y</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$dst_w</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$dst_h</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$src_w</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$src_h</tt></span> )</div> <p class="para rdfs-comment"> <b>imagecopyresampled()</b> copies a rectangular portion of one image to another image, smoothly interpolating pixel values so that, in particular, reducing the size of an image still retains a great deal of clarity. </p> <p class="para"> In other words, <b>imagecopyresampled()</b> will take an rectangular area from <i><tt class="parameter">src_image</tt></i> of width <i><tt class="parameter">src_w</tt></i> and height <i><tt class="parameter">src_h</tt></i> at position (<i><tt class="parameter">src_x</tt></i>,<i><tt class="parameter">src_y</tt></i>) and place it in a rectangular area of <i><tt class="parameter">dst_image</tt></i> of width <i><tt class="parameter">dst_w</tt></i> and height <i><tt class="parameter">dst_h</tt></i> at position (<i><tt class="parameter">dst_x</tt></i>,<i><tt class="parameter">dst_y</tt></i>). </p> <p class="para"> If the source and destination coordinates and width and heights differ, appropriate stretching or shrinking of the image fragment will be performed. The coordinates refer to the upper left corner. This function can be used to copy regions within the same image (if <i><tt class="parameter">dst_image</tt></i> is the same as <i><tt class="parameter">src_image</tt></i>) but if the regions overlap the results will be unpredictable. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">dst_im</tt></i></span> <dd> <p class="para"> Destination image link resource. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">src_im</tt></i></span> <dd> <p class="para"> Source image link resource. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">dst_x</tt></i></span> <dd> <p class="para"> x-coordinate of destination point. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">dst_y</tt></i></span> <dd> <p class="para"> y-coordinate of destination point. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">src_x</tt></i></span> <dd> <p class="para"> x-coordinate of source point. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">src_y</tt></i></span> <dd> <p class="para">⌨️ 快捷键说明
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