- Save Regexctrl+s
- Update Regexctrl+⇧+s

- PCRE2 (PHP >=7.3)
- PCRE (PHP <7.3)
- ECMAScript (JavaScript)
- Python
- Golang
- Java 8

- Match
- Substitution
- List
- Unit Tests

Sponsor

Jamstack at Scale

/

^[_A-Za-z0-9-\+]+(\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\.[A-Za-z0-9]+)*(\.[A-Za-z]{2,})$

/

gm

^ asserts position at start of a line

Match a single character present in the list below

[_A-Za-z0-9-\+]

+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

_ matches the character _ with index 95_{10} (5F_{16} or 137_{8}) literally (case sensitive)

A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)

a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

- matches the character - with index 45_{10} (2D_{16} or 55_{8}) literally (case sensitive)

This hyphen is treated literally, which might be confusing for others. Consider escaping it or placing at the start or end of the class!

\+ matches the character + with index 43_{10} (2B_{16} or 53_{8}) literally (case sensitive)

1st Capturing Group

(\.[_A-Za-z0-9-]+)*

* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data

\. matches the character . with index 46_{10} (2E_{16} or 56_{8}) literally (case sensitive)

Match a single character present in the list below

[_A-Za-z0-9-]

+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

_ matches the character _ with index 95_{10} (5F_{16} or 137_{8}) literally (case sensitive)

A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)

a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

- matches the character - with index 45_{10} (2D_{16} or 55_{8}) literally (case sensitive)

@ matches the character @ with index 64_{10} (40_{16} or 100_{8}) literally (case sensitive)

Match a single character present in the list below

[A-Za-z0-9-]

+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)

a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

- matches the character - with index 45_{10} (2D_{16} or 55_{8}) literally (case sensitive)

2nd Capturing Group

(\.[A-Za-z0-9]+)*

* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data

\. matches the character . with index 46_{10} (2E_{16} or 56_{8}) literally (case sensitive)

Match a single character present in the list below

[A-Za-z0-9]

A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)

a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)

0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)

3rd Capturing Group

(\.[A-Za-z]{2,})

\. matches the character . with index 46_{10} (2E_{16} or 56_{8}) literally (case sensitive)

Match a single character present in the list below

[A-Za-z]

{2,} matches the previous token between 2 and unlimited times, as many times as possible, giving back as needed (greedy)

A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)

a-z matches a single character in the range between a (index 97) and z (index 122) (case sensitive)

$ asserts position at the end of a line

Global pattern flags

g modifier: **g**lobal. All matches (don't return after first match)

m modifier: **m**ulti line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)

Your regular expression does not match the subject string.Try launching the debugger to find out why.

/

/

gm

Please wait while the app is loading...