Question

I have this rule in my .htaccess:

RewriteRule ^build_system/([^/]+)/([^/]+)/([^/]+)/?$ /po_systems/build_system.php?business_id=$1&system_id=$2&quantity=$3

这对这个时代大有好处:

http://somesite.com/po_systems/build_system/60/495C31/1

但现在,我需要任择的第四版<代码>。本条细则的变量:_$_GET

http://somesite.com/po_systems/build_system/60/495C31/1/2

$_GET[ step ] // 2

But I also need the rule to work if there is no 4th Get variable. So basically I need both 3 and 4 Get variables to work, making the 4th optional.

Answer 1

我将用两项单独的规则写成:

RewriteRule ^build_system/([^/]+)/([^/]+)/([^/]+)/([^/]+)/?$ /po_systems/build_system.php?business_id=$1&system_id=$2&quantity=$3&step=$4 [S=1]
RewriteRule ^build_system/([^/]+)/([^/]+)/([^/]+)/?$         /po_systems/build_system.php?business_id=$1&system_id=$2&quantity=$3

如果有4个路径组成部分,则第1条将相应适用,并绕过下一个规则([S=1])。否则,下一条规则将试图做到一致。

@Ulrich Palha的解决办法可能也奏效,但经常表达方式正在变得复杂。如果第4条道路部分没有的话,它将通过空洞的<条码>步骤=参数。如果不存在第4条道路构成部分,那么我的解决办法将不会通过<条码>分步骤参数。这两种方式都应奏效。

Answer 2

审判

RewriteRule ^build_system/([^/]+)/([^/]+)/([^/]+)/?([^/]*)/?$ /po_systems/build_system.php?business_id=$1&system_id=$2&quantity=$3&step=$4

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