运行一下以下代码
- PHP code
$img = imagecreatetruecolor(600, 600);$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);你会发现垂直的虚线没问题，但水平虚线就不显示。有谁知道为什么？
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- PHP code
$img = imagecreatetruecolor(600, 600);$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);
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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
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This functions just works with vertical lines!该函数只能画垂直线！
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确实，GD库只能画竖直的虚线！