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How to Match Newline Characters Within `` Tags in Regular Expressions?

Barbara Streisand
Barbara StreisandOriginal
2024-10-31 03:01:311047browse

How to Match Newline Characters Within `` Tags in Regular Expressions?

Matching Newline Characters in Regular Expressions

You have a string with characters, whitespace, and newlines between

and
. The regular expression
(.)
fails because . does not match newlines.

Solution 1: DOTALL Modifier (s)

Use the DOTALL modifier (s), which makes the dot (.) match newlines:

'/<div>(.*)<\/div>/s'

Solution 2: Non-Greedy Match

To prevent greedy matching, use a non-greedy match with *?:

'/<div>(.*?)<\/div>/s'

Solution 3: Exclude < If Other Tags Are Not Present

You can match everything except < if there aren't other tags:

'/<div>([^<]*)<<\/div>/''

Note on Regex Delimiters

You can use characters other than / as regular expression delimiters, which allows for easier escaping of special characters:

'#<div>([^<]*)<<\/div>#'

Caution

These solutions may fail for nested divs, extra whitespace, HTML comments, and other complexities. Consider using an HTML parser for reliable HTML parsing.

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