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php如何对文件做处理,并提取内容生成文件?
这是一个原html文件
<br /> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br /> <html xmlns="http://www.w3.org/1999/xhtml"><br /> <head><br /> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><br /> <title>无标题文档</title><br /> </head><br /> <body><br /> <div class="header"></div><br /> <br /> <div class="warp"><br /> <div><br /></div><br /> <div><br /></div><br /> <div><br /></div><br /> <div><br /></div><br /> </div><br /> <br /> <div class="footer"></div><br /> </body><br /> </html><br />
<br /> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br /> <!-- Start --><br /> <html xmlns="http://www.w3.org/1999/xhtml"><br /> <head><br /> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><br /> <title>无标题文档</title><br /> </head><br /> <body><br /> <div class="header"></div><br /> <!-- End --><br /> <br /> <br /> <!-- Start --><br /> <div class="warp"><br /> <div><br /></div><br /> <div><br /></div><br /> <div><br /></div><br /> <div><br /></div><br /> </div><br /> <!-- End --><br /> <br /> <br /> <!-- Start --><br /> <div class="footer"></div><br /> </body><br /> </html><br /> <!-- End --><br />