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用php的GD库画不出水平的虚线
运行一下以下代码
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ -->$img = imagecreatetruecolor(600, 600); $white = imagecolorallocate($img, 255, 255, 255); imagedashedline($img, 20, 20, 500, 20, $white); imagedashedline($img, 20, 20, 20, 500, $white); header("content-type:image/jpeg"); imagejpeg($img); imagedestroy($img);
$img = imagecreatetruecolor(600, 600); $white = imagecolorallocate($img, 255, 255, 255); $red = imagecolorallocate($img, 255, 0, 0); $style = array($red, $red, $red, $red, $red, $white, $white, $white, $white, $white); imagesetstyle($img, $style); imageline($img, 20, 20, 500, 20, IMG_COLOR_STYLED); header("content-type:image/jpeg"); imagejpeg($img); imagedestroy($img); <br><font color="#e78608">------解决方案--------------------</font><br>The bug reported by 'michi at marel dot at' also exists in PHP version 5.1.1. This functions just works with vertical lines! 5.1.1版本发现的BUG,反对使用本函数。应该用 imagesetstyle() 和 imageline() 的组合替代之 <br><font color="#e78608">------解决方案--------------------</font><br>This functions just works with vertical lines!该函数只能画垂直线! <br><font color="#e78608">------解决方案--------------------</font><br>确实,GD库只能画竖直的虚线! <div class="clear"> </div>