📄 function.imagedashedline.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>Draw a dashed line</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.imagecreatetruecolor.html">imagecreatetruecolor</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagedestroy.html">imagedestroy</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.imagedashedline" class="refentry"> <div class="refnamediv"> <h1 class="refname">imagedashedline</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">imagedashedline</span> — <span class="dc-title">Draw a dashed line</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>imagedashedline</b></b></span> ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$image</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$x1</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$y1</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$x2</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$y2</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$color</tt></span> )</div> <p class="para rdfs-comment"> This function is deprecated. Use combination of <a href="function.imagesetstyle.html" class="function">imagesetstyle()</a> and <a href="function.imageline.html" class="function">imageline()</a> instead. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt><span class="term"><i><tt class="parameter">image</tt></i></span><dd><p class="para">An image resource, returned by one of the image creation functions, such as <a href="function.imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a>.</p></dd></dt> <dt> <span class="term"><i><tt class="parameter">x1</tt></i></span> <dd> <p class="para"> Upper left x coordinate. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">y1</tt></i></span> <dd> <p class="para"> Upper left y coordinate 0, 0 is the top left corner of the image. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">x2</tt></i></span> <dd> <p class="para"> Bottom right x coordinate. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">y2</tt></i></span> <dd> <p class="para"> Bottom right y coordinate. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">color</tt></i></span> <dd> <p class="para"> The fill color. A color identifier created with <a href="function.imagecolorallocate.html" class="function">imagecolorallocate()</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Always returns true </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>imagedashedline()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Create a 100x100 image<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$white </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">, </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">, </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Draw a vertical dashed line<br /></span><span style="color: #0000BB">imagedashedline</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #0000BB">25</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #0000BB">75</span><span style="color: #007700">, </span><span style="color: #0000BB">$white</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Save the image<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #DD0000">'./dashedline.png'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="mediaobject"> <div class="imageobject"> <img src="figures/image.imagedashedline.png" /> </div> </div> </div> <div class="example"> <p><b>Example #2 Alternative to <b>imagedashedline()</b></b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Create a 100x100 image<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$white </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">, </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">, </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Define our style: First 4 pixels is white and the <br />// next 4 is transparent. This creates the dashed line effect<br /></span><span style="color: #0000BB">$style </span><span style="color: #007700">= Array(<br /> </span><span style="color: #0000BB">$white</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">$white</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">$white</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">$white</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">IMG_COLOR_TRANSPARENT</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">IMG_COLOR_TRANSPARENT</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">IMG_COLOR_TRANSPARENT</span><span style="color: #007700">, <br /> </span><span style="color: #0000BB">IMG_COLOR_TRANSPARENT<br /> </span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">imagesetstyle</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">$style</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Draw the dashed line<br /></span><span style="color: #0000BB">imageline</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #0000BB">25</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #0000BB">75</span><span style="color: #007700">, </span><span style="color: #0000BB">IMG_COLOR_STYLED</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Save the image<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #DD0000">'./imageline.png'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.imagesetstyle.html" class="function" rel="rdfs-seeAlso">imagesetstyle()</a></li> <li class="member"><a href="function.imageline.html" class="function" rel="rdfs-seeAlso">imageline()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagecreatetruecolor.html">imagecreatetruecolor</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagedestroy.html">imagedestroy</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></body></html>⌨️ 快捷键说明
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