Regular expression _php techniques that can filter multiple lines of code in DEDECMS collection

Source: Internet
Author: User
In the past with Dede collection, always filtered more than one line of code, can only line of filtering, online, found that there are many and I like the rookie. With the continuous use of Dede acquisition, there is a further understanding of the positive, now I use a regular expression, can also match multiple lines of code.

For example: In the following code, filter out a hyperlink with two lines of code.

<TD align= "center" >
<a href= "" >xxx

With the following filter, you can achieve multiple line matching
{Dede:trim} <a href= "" > ([^\n<]*) </a> {/dede:trim}

Looks like \ n Such a symbol, can act as a newline character, one \ n represents a newline.
Hope to be useful to the beginner Dede.

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