ThinkPhp中使用Verify类生产验证码不显示的原因教程.docx

关键字：? ?think HYPERLINK /tag/php \o php \t /post/_bank php验证码,验证码不显示,verify INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8n585kxf.png \* MERGEFORMATINET  网站是用think HYPERLINK /tag/php \o php \t /post/_bank php3.2.3开发的，在部署的时候发现验证码不好使了，显示不了。 可以看到只显示裂开的图标 INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8lddtccz.png?media_id=191 \* MERGEFORMATINET  右键-在新标签页中打开图片 INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8m2g31a.png?media_id=192 \* MERGEFORMATINET  查看源代码，可以看到输出的内容是png的内容,说明有输出 INCLUDEPICTURE \d /Public/Uploads/image/150820/ex998bon1f.png?media_id=200 \* MERGEFORMATINET  按键F12，在Network 栏中可以看到输出 （Response Header下，content-Length为2458） INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8m3mgf84.png?media_id=193 \* MERGEFORMATINET  在生成验证码的代码前加上语句exit; INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8mbwvrwj.png?media_id=195 \* MERGEFORMATINET  完整代码如下 function verify(){ $config = array(expire=2400, length = 6,useCurve=false, codeSet=123456789); exit; $verify = new Verify($config); $verify-entry(); } 在调试中，可以看到content-length为3，说明在生成验证码之前有输出，影响了验证码的输出。 INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8ma47kuf.png?media_id=194 \* MERGEFORMATINET  在exit前，加上ob_end_clean(); INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8mdg35p0.png?media_id=196 \* MERGEFORMATINET  function verify(){ $config = array(expire=2400, length = 6,useCurve=false, codeSet=123456789); ob_end_clean(); exit; $verify = new Verify($config); $verify-entry(); } 再???查看，可以看到content-length为0； INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8n2n0kl.png?media_id=197 \* MERGEFORMATINET  去除代码exit; INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8n1wj6d8.png?media_id=198 \* MERGEFORMATINET  现在可以正常显示了。 INCLUDEPICTURE \d /Public/Uploads/image/150820/ex8n585kxf.png?media_id=199 \* MERGEFORMATINET  总结  HYPERLINK /tag/thinkphp \o thinkphp \t /post/_bank thinkphp中使用Verify类生产验证码不显示的原因： ph