阿帕奇2.4.3 SSI如果expr没有变量？ [英] Apache 2.4.3 SSI if expr no variables?

问题描述

我有一个小的差异很多文件。所包含的文件包含此，它试图区分一个较长的路径的一部分：

I have many files with small differences. The included file contains this, which tries to differentiate on one part of a longer path:

<!--#if expr="${DOCUMENT_URI}=/internet/"-->Internet<!--#else-->Intranet<!--#endif-->

在错误日志中我得到

In the error log I get

AH01337：无法解析EXPR$ {} DOCUMENT_URI = /网络/，在/opt/apache/htdocs/ssi/time.shtml：解析错误​​附近的$

AH01337: Could not parse expr "${DOCUMENT_URI}=/internet/" in /opt/apache/htdocs/ssi/time.shtml: Parse error near '$'

我找到关于这一主题的很多变化，像没有括号，括号围绕引号内，空间注释年底前或=〜，但没有什么帮助。似乎没有成为mod_include负责调试设置，它会告诉我什么是错的...

I find many variations on this theme, like no braces, parentheses around the inside of the quotes, space before the comment end or =~, but nothing helps. There doesn't seem to be a debug setting for mod_include, which would tell me what's wrong...

我发现了另一个变体是

<!--#if expr='"${DOCUMENT_URI}"=~/internet/'-->

这给没有错误。但它总是与 REQUEST_URI 选择else分支，同样，仿佛变量是未设置。但我可以附和罚款他们。我也试过 /.+互联网+ / 的情况下，它被锚定这一点。

this gives no error. But it always chooses the else branch, likewise with REQUEST_URI, as though the variables were unset. But I can echo them fine. I also tried /.+internet.+/ in case it was anchoring this.

由于这些是CGI变量我也尝试加载cgid_module - 没有好或者

Since these are CGI variables I also tried loading cgid_module – no good either.

推荐答案

截至2.3.13版本，mod_include负责已切换到有条件的前pressions新ap_expr语法在#if流量控制元件。

As of version 2.3.13, mod_include has switched to the new ap_expr syntax for conditional expressions in #if flow control elements.

添加 SSILegacyExprParser上指令切换到旧的语法是与Apache的httpd版本2.2.x的兼容和更早版本。

Add the SSILegacyExprParser on directive to switch to the old syntax which is compatible with Apache HTTPD version 2.2.x and earlier.

<一个href=\"http://httpd.apache.org/docs/current/mod/mod_include.html#ssilegacyexprparser\">http://httpd.apache.org/docs/current/mod/mod_include.html#ssilegacyexprparser

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