LINUX下PHP网页生成快照（截屏）（xvfb and wkhtmltoimage）
利用php截屏或实现网页快照我们需要用一个工具：xvfb and wkhtmltoimagek哦，这个工具目前只能在linux系统中使用，下面有兴趣的朋友可进入参考。
在做旅游攻略时，需要把攻略页面生成PDF和Jpg图片，PDF生成用的是《MPDF把Html生成PDF》，而HTML生成Jpg又卡壳了。前期打算以纯程式的生成，但是除了调用别的网站提供的远程API生成Jpg，不然以单纯的程式(GD库和内置函数，或封装的类)都没找到完美的解决。
不得已，安装扩展wkhtmltoimage生成。
安装步骤如下：
1、服务器端下载安装wkhtmltoimage,32和64位有区别，心情天空安装的是centos 5.8 32位。但是下载了 wkhtmltoimage 0.11版本但是出现以下错误，
Pixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used
QPixmap: Cannot create a QPixmap when no GUI is being used最后心情天空安装wkhtmltoimage-0.10.0_rc2-static-i386.tar.bz2低版本才可以正常生成。
32位
wget http://wkhtmltopdf.googlecode.com/files/wkhtmltoimage-0.10.0_rc2-static-i386.tar.bz2
tar jxf wkhtmltoimage-0.10.0_rc2-static-i386.tar.bz2
cp wkhtmltoimage-i386 /usr/local/bin/wkhtmltoimage
64位
wget http://wkhtmltopdf.googlecode.com/files/wkhtmltoimage-0.10.0_rc2-static-amd64.tar.bz2
mv wkhtmltoimage-0.10.0_rc2-static-amd64.tar.bz2 wkhtmltoimage-0.10.0_rc2-static-amd64.tar
tar -xvf wkhtmltoimage-0.10.0_rc2-static-amd64.tar
mv wkhtmltoimage-amd64 /usr/bin/wkhtmltoimage
就这样,安装成功,可以测试 wkhtmltoimage http://www.bKjia.c0m/ screenshot.png
2、php执行wkhtmltoimage 生成图片
| 代码如下 | 复制代码 |
|
set_time_limit(0); |
|
假若用foreach批量生成的话建议，sleep(10)，每次生成后停顿几秒。
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