最後更新: 2022-11-21

目錄

• if
  Cache 了的檔案(IMG)不被 php call
   

if

Unary operators

• -d     True if the file exists and is a directory
• -e     True if the file (or dir or special) exists
• -f     True if the file exists and is regular file
• -s     True if the file exists and is not empty
• -L     True if the file exists and is symlink
• -h     True if the file exists and is symlink (same as -L)
• -z     True if string is empty
• -n     True if string is not empty
• -R     Same as "%{REMOTE_ADDR} -ipmatch ...", but more efficient

binary operators

• ==
• !=
• >
• >=
• <
• <=

====

• -ipmatch
• -strmatch
• -strcmatch  # same as -strmatch, but case insensitive
• -fnmatch     # same as -strmatch, but slashes are not matched by wildcards

Integer Comparison

• -eq
• -ne
• -lt
• -le
• -gt
• -ge

regular expression

• =~         String matches the regular expression
• !~         String does not match the regular expression

Functions

• req        # Get HTTP request header; header names may be added to the Vary header, see below
• tolower  # Convert string to lower case
• md5      # Hash the string using MD5, then encode the hash with hexadecimal encoding
• file        # Read contents from a file (including line endings, when present)
• reqenv   # Lookup request environment variable (as a shortcut, v can also be used to access variables).
• ...

Example

[1] Check mulit remote subnet

<If "-R '192.168.0.0/16' || -R '10.0.248.0/24'">

[2]

<If "md5('foo') == 'acbd18db4cc2f85cedef654fccc4a4d8'">
  Header set checksum-matched true
</If>

[3] Check a HTTP header for a list of values

<If "%{HTTP:X-example-header} in { 'foo', 'bar', 'baz' }">
    Header set matched true
</If>

[4]Cache 了的檔案(IMG)不被 php call

<If "%{REQUEST_URI} =~ m#/.*\.php/.*\.(jpg|png|css|js)$#i">
    Require all denied
</If>

m#regexp#i is an alternative of /regexp/

i    Case insensitive regular expression

If ... ElseIf ... Else ...

<If "-R '10.1.0.0/16'">
  #...
</If>
<ElseIf "-R '10.0.0.0/8'">
  #...
</ElseIf>
<Else>
  #...
</Else>