Regular Expressions 101

Order By

Filter by Flavor

Community Patterns

Search among 18,020 community submitted regex patterns...

Community Library Entry

Regular Expression
PCRE (PHP <7.3)

^(?:((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))([\-.\/])(?:(0?[13578]|1[02])(?:\2)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\2)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\2)(0?[1-9]|[12][0-9]))|((?:16|[357][26]|[2468][048])(?:0[1235679]|[13579][01345789]|[2468][1235679])|(?:1[789]|[35679][01345789]|[248][12345679])(?:0[01235679]|[13579][01345789]|[2468][1235679])|(?:15)(?:8[235679]|9[01345789]))([\-.\/])(?:(0?[13578]|1[02])(?:\10)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\10)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\10)(0?[1-9]|1[0-9]|2[0-8])))$

Open regex in editor

Description

validates any date in yyyy-M-d format from 1581-01-01 to 9999-12-31, allowed delimiters are "/", "." and "-"

Submitted by anonymous - 6 years ago

Order By

Filter by Flavor

Community Patterns

password strong

<style>标签的匹配

<script>标签的匹配

UPN Compiladores

ipv4

find email addresses

原神圣遗物OCR副属性（中文简体）

test

MLA journal article Works Cited bibliography entry

Email simple validation (x@x.x)

Phone number regex

#value # value

Remove enclosing quotes

CVE-2021-31805 (s2-062)

get teacher url

regex_commercial_activities

Clean phone numbers

first word regex

LinkTree

OS正则表达式

Community Library Entry

Regular ExpressionPCRE (PHP <7.3)

Description

Regular Expression
PCRE (PHP <7.3)