# Regexp what means?

**URL:** <https://forum.mautic.org/t/regexp-what-means/7611>\
**Category:** Product Support\
**Created:** [February 20, 2017, 7:00pm UTC](https://forum.mautic.org/t/regexp-what-means/7611 "2017-02-20T19:00:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Antonio\_Lazzari](https://avatars.discourse-cdn.com/v4/letter/a/e99b99/32.png) [@Antonio\_Lazzari](https://forum.mautic.org/u/Antonio_Lazzari)\
**Post date:** [February 20, 2017, 7:00pm UTC](https://forum.mautic.org/t/regexp-what-means/7611/1 "2017-02-20T19:00:25Z")

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Hi guys someone can explain me the use of:

1. like  
2. regexp  
  
in the filters of Dynamic Content?  
  
What mean like?  
  
How I can write a regexp? Is eg: field=\>number? Or what???  
  
Thanks a lot

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**Author:** ![Antonio\_Lazzari](https://avatars.discourse-cdn.com/v4/letter/a/e99b99/32.png) [@Antonio\_Lazzari](https://forum.mautic.org/u/Antonio_Lazzari)\
**Post date:** [February 20, 2017, 7:00pm UTC](https://forum.mautic.org/t/regexp-what-means/7611/2 "2017-02-20T19:00:25Z")

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Hi guys someone can explain me the use of:

1. like
2. regexp  
in the filters of Dynamic Content?  
What mean like?  
How I can write a regexp? Is eg: field=\>number? Or what???  
Thanks a lot

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<div class="post-metadata">

**Author:** ![regis](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/regis/32/25_2.png) [@regis](https://forum.mautic.org/u/regis)\
**Post date:** [March 30, 2017, 10:42pm UTC](https://forum.mautic.org/t/regexp-what-means/7611/3 "2017-03-30T22:42:25Z")

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good question! I need to know this too.  
In the date filter of smartlist this term is used and I can’t know what means.

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**Author:** ![Yannick038](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/yannick038/32/117_2.png) [@Yannick038](https://forum.mautic.org/u/Yannick038)\
**Post date:** [March 31, 2017, 1:48pm UTC](https://forum.mautic.org/t/regexp-what-means/7611/4 "2017-03-31T13:48:08Z")

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Like is a sql keyword for example you can search using part of words or data

For example if you want all contact where firstname starts with Yan, you will choose Like Yan%  
If you want all contact where name containing “nick” like %nick

if you want all composed prenom with “Mary” whatever the position, you will use like %Mary%

Regular expressions are a bit more complex but yet more powerful.  
Check for example [http://www.regular-expressions.info/examples.html](http://www.regular-expressions.info/examples.html)

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**Author:** ![regis](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/regis/32/25_2.png) [@regis](https://forum.mautic.org/u/regis)\
**Post date:** [April 7, 2017, 3:35pm UTC](https://forum.mautic.org/t/regexp-what-means/7611/5 "2017-04-07T15:35:59Z")

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Very good! thanks @Yannick038 !