


How to solve the problem that the php linux verification code does not display
php linux验证码不显示的解决办法:首先定义验证码中要用到的颜色;然后通过“imagefilledrectangle”等函数画出背景边框等;接着画验证码;最后在linux中把对应的字体放到上级目录中即可。
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php 验证码linux下只显示画布,不显示验证码的终极解决方法
经测试通过,首先放出我的代码
<?php session_start(); /**去掉boom就是utf-8 * vCode(m,n,x,y) m个数字 显示大小为n 边宽x 边高y * http://blog.qita.in * 自己改写记录session $code */ vCode(4, 12); //4个数字,显示大小为15 function vCode($num = 4, $size = 20, $width = 0, $height = 0) { !$width && $width = $num * $size * 4 / 5 + 5; !$height && $height = $size + 10; // 去掉了 0 1 O l 等 $str = "23456789abcdefghijkmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVW"; $code = ''; for ($i = 0; $i < $num; $i++) { $code .= $str[mt_rand(0, strlen($str)-1)]; } // 画图像 $im = imagecreatetruecolor($width, $height); // 定义要用到的颜色 $back_color = imagecolorallocate($im, 235, 236, 237); $boer_color = imagecolorallocate($im, 118, 151, 199); $text_color = imagecolorallocate($im, mt_rand(0, 200), mt_rand(0, 120), mt_rand(0, 120)); // 画背景 imagefilledrectangle($im, 0, 0, $width, $height, $back_color); // 画边框 imagerectangle($im, 0, 0, $width-1, $height-1, $boer_color); // 画干扰线 for($i = 0;$i < 5;$i++) { $font_color = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)); imagearc($im, mt_rand(- $width, $width), mt_rand(- $height, $height), mt_rand(30, $width * 2), mt_rand(20, $height * 2), mt_rand(0, 360), mt_rand(0, 360), $font_color); } // 画干扰点 for($i = 0;$i < 50;$i++) { $font_color = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)); imagesetpixel($im, mt_rand(0, $width), mt_rand(0, $height), $font_color); } // 画验证码 http://www.ruoshuiyx.com 转载请保留出处谢谢,不会影响您的代码执行速度如不会请资讯若水印象网络站长 //@imagefttext($im, $size , 0, 5, $size + 3, $text_color, 'c:\\WINDOWS\\Fonts\\simsun.ttc', $code); //上边的是windows下试用的下边是LINUX系统下试用的,需要对应把字体上传上去 @imagefttext($im, $size , 0, 5, $size + 3, $text_color, '../msyh.ttf', $code); $_SESSION["VerifyCode"]=strtolower($code); //转换成小写 header("Cache-Control: max-age=1, s-maxage=1, no-cache, must-revalidate"); header("Content-type: image/png;charset=utf-8"); imagepng($im); imagedestroy($im); } ?>
复制下载后注意41和43行,如果服务器是windows那么请把43行注释掉,保留41行,linux则反过来
linux下注意下要把对应的字体放到上级目录里,如我用的是微软雅黑。别的方法俺也不会反正最终是显示出来了。赶快试试吧
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