PHP正则表达式匹配/删除两个单词

Question

我想删除#xyzbegin和#xyzend

之间的所有内容

#xyzbegin
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_METHOD} !POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
RewriteCond %{DOCUMENT_ROOT}/wp-content/xyz-cache/$1/index.html -f
RewriteRule ^(.*) "/wp-content/xyz-cache/$1/index.html" [L]

</IfModule>
#xyzend

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

我的正则表达式是：

'/#xyzbegin(.*)#xyzend/m' 

我也试过了：

'/^#xyzbegin(.*)#xyzend$/m'

两者都不起作用。请帮忙。

Answer 1

您需要s修饰符才能匹配多行

<?php
/**
*/

$in = <<<CODE

#xyzbegin
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_METHOD} !POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
RewriteCond %{DOCUMENT_ROOT}/wp-content/xyz-cache/$1/index.html -f
RewriteRule ^(.*) "/wp-content/xyz-cache/$1/index.html" [L]

</IfModule>
#xyzend

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress";
CODE;



echo preg_replace('/#xyzbegin(.*)#xyzend/s','',$in );