Regular Expressions 101

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Community Patterns

2

**japanese text** to bold <b>japanese text</b>

PCRE (PHP <7.3)
japanese text to bold japanese text 食べるんだ 食べるんだ
Submitted by kurokuroshii - 22 days ago (Last modified 22 days ago)
1

RFC3339 Validator

PCRE (PHP <7.3)
RFC3339 Validator
Submitted by anonymous - a month ago (Last modified a month ago)
1

Automod - Discord scam invitations

PCRE (PHP <7.3)
Matches variations of messages commonly used to send Discord scams/hacks. Instructions are written for YAGPDB
Submitted by paiuxfluens - 3 months ago
1

YouTube Video ID

Java 8
Gets the ID of a YouTube Video from any link to it.
Submitted by cheeseburger - 4 months ago
1

indented lines with continuation

PCRE (PHP <7.3)
Example taken from SO,
Submitted by anonymous - 4 months ago
1

Renamer Log file to CSV

PCRE (PHP <7.3)
Catches our log files renamed file names and adds them to CSV file
Submitted by anonymous - 5 months ago
1

Parse Address - Prefecture

Java 8
get prefecture from Japanese address
Submitted by Gary Ascuy - 6 months ago
1

AWS EventBridge Scheduling Expressions

Java 8
This validates AWS EventBridge scheduling expressions using the rate() and cron() formats. It may not catch all invalid expressions, but it should properly validate all valid expressions, as demonstrated in the unit tests. Please let me know if I missed any valid expressions. Originally attempted ...
Submitted by Evan S Kaufman <evan@evanskaufman.com> - 6 months ago (Last modified 4 months ago)
1

IANA Media Type

Java 8
Parses an IANA Media Type value. Doesn't seem to capture repeating parameters, which is a bit of an edge case but valid I think - any suggestions on how to fix would be appreciated.
Submitted by scottbdr - 7 months ago
1

Detect Multiple File Extensions

PCRE (PHP <7.3)
I use this to find files with two or more extensions (i.e. file.txt.txt). This will work with files with 3 or 4 character or numeric (or both) file extensions (i.e. pdf, xlsx).
Submitted by Curve - 7 months ago (Last modified 7 months ago)
1

Chinese Digits

PCRE (PHP <7.3)
Match Chinese Digits less than 1×10^16, such as “一千两百三十四万”、“八萬点七六五”、“玖仟玖佰玖拾玖万玖仟玖佰玖拾玖亿玖仟玖佰玖拾玖万玖仟玖佰玖拾玖点玖玖玖玖玖玖玖玖玖玖玖玖玖玖玖玖”，Upper and lower case Chinese can be mixed, but Chinese numbers and English numbers cannot be mixed. Illegal numbers will not be matched. For example: “两十六” will not be matched, as t...
Submitted by anonymous - 8 months ago (Last modified 7 months ago)
1

NPC名称匹配

PCRE (PHP <7.3)
^\h{4}段首4个横向空格 +不包含左括号、换行符号的其他字符，1~无限循环 \((.*)\)$捕获处于（）之中的任意字符内容，右括号在段尾
Submitted by vicrly - 9 months ago
1

文件名称验证

Java 8
操作系统文件名称验证，参考了Windows，Linux，Mac
Submitted by 腾龙问天 - 9 months ago
1

verifyIPV6

Java 8
verificare indirizzo IPV6 (regole base)
Submitted by Luigi Piccinni - 10 months ago
2

Check Email Validity

Java 8
Regular expression to check the email syntax validity. Certainly requires improvement, but it's a good basis to work from. Work with Java and JavaScript.
Submitted by Alain TOMASIAN <alain.tomasian@kaptus.fr> - 10 months ago (Last modified 10 months ago)
1

Gradient for minecraft

Java 8
This is for my plugin project
Submitted by Trần Thế Anh - 10 months ago
1

77870294

PCRE (PHP <7.3)
618001/041881 564094
Submitted by 960203095053 - 10 months ago (Last modified 10 months ago)
1

Youtube Video ID

Java 8
Extract youtube video ID
Submitted by anonymous - a year ago (Last modified 10 months ago)
1

Extract text strings from repeating text fields followed by a suffix

Java 8
This regex expression is useful for extracting only the text string from a value in a column that may contain values from individual rows with repeat strings tagged with a suffix. For example - Row 1: "Sales (#1)", Row 2: "Sales Match (#2)". From the shared examples, this regex will extract the text...
Submitted by nilotpalc - a year ago
1

groupping math every 2 comma separator

PCRE (PHP <7.3)
i have paste \n after every 2-th comma using sed sed 's/\(\(*,\)\{2\}\)/\1\n/g'
Submitted by sanekmihailow - a year ago
123...472

URL regexp

40

Regular Expression
PCRE (PHP <7.3)

/
((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[.\!\/\\w]*))?)
/
ig
Open regex in editor

Description

A quite neat regular expression for URLs, e-mails..., I found on Matthew O'Riordan's blog.

Submitted by Matthew O'Riordan - 12 years ago