OpenShift空间默认是没有开启URL重写功能的，需要自己创建.htaccess文件来开启。
在你应用目录(/app-root/runtime/repo/php)下建立文件名“.htaccess” 。
以Discuz论坛为例，内容如下：
RewriteEngine On
RewriteBase /
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^topic-(.+)\.html$ portal.php?mod=topic&topic=$1&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^article-([0-9]+)-([0-9]+)\.html$ portal.php?mod=view&aid=$1&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^forum-(\w+)-([0-9]+)\.html$ forum.php?mod=forumdisplay&fid=$1&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^thread-([0-9]+)-([0-9]+)-([0-9]+)\.html$ forum.php?mod=viewthread&tid=$1&extra=page\%3D$3&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^group-([0-9]+)-([0-9]+)\.html$ forum.php?mod=group&fid=$1&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^space-(username|uid)-(.+)\.html$ home.php?mod=space&$1=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^blog-([0-9]+)-([0-9]+)\.html$ home.php?mod=space&uid=$1&do=blog&id=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^archiver/(fid|tid)-([0-9]+)\.html$ archiver/index.php?action=$1&value=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteBase /
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^topic-(.+)\.html$ portal.php?mod=topic&topic=$1&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^article-([0-9]+)-([0-9]+)\.html$ portal.php?mod=view&aid=$1&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^forum-(\w+)-([0-9]+)\.html$ forum.php?mod=forumdisplay&fid=$1&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^thread-([0-9]+)-([0-9]+)-([0-9]+)\.html$ forum.php?mod=viewthread&tid=$1&extra=page\%3D$3&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^group-([0-9]+)-([0-9]+)\.html$ forum.php?mod=group&fid=$1&page=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^space-(username|uid)-(.+)\.html$ home.php?mod=space&$1=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^blog-([0-9]+)-([0-9]+)\.html$ home.php?mod=space&uid=$1&do=blog&id=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^archiver/(fid|tid)-([0-9]+)\.html$ archiver/index.php?action=$1&value=$2&%1
RewriteCond %{QUERY_STRING} ^(.*)$
RewriteRule ^([a-z]+[a-z0-9_]*)-([a-z0-9_\-]+)\.html$ plugin.php?id=$1:$2&%1
即可开启重写功能了。