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- PCRE2 (PHP >=7.3)
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- Unit Tests (15)

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/

^\s*(([+]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){2}([+]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s*$

/

gm

^ asserts position at start of a line

\s

matches any whitespace character (equivalent to [\r\n\t\f\v \u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff])* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

1st Capturing Group

(([+]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)\s+){2}

{2} matches the previous token exactly 2 times

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

2nd Capturing Group

([+]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)

Match a single character present in the list below

[+]

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

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

3rd Capturing Group

((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)

1st Alternative

(0|[1-9][0-9]*)(\.[0-9]*)?

4th Capturing Group

(0|[1-9][0-9]*)

1st Alternative

0

0 matches the character 0 with index 48_{10} (30_{16} or 60_{8}) literally (case sensitive)

2nd Alternative

[1-9][0-9]*

Match a single character present in the list below

[1-9]

1-9 matches a single character in the range between 1 (index 49) and 9 (index 57) (case sensitive)

Match a single character present in the list below

[0-9]

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

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

5th Capturing Group

(\.[0-9]*)?

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

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

Match a single character present in the list below

[0-9]

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

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

2nd Alternative

\.[0-9]+

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

Match a single character present in the list below

[0-9]

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

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

6th Capturing Group

([Ee][+-]?[0-9]+)?

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

Match a single character present in the list below

[Ee]

Ee

matches a single character in the list Ee (case sensitive)Match a single character present in the list below

[+-]

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

Match a single character present in the list below

[0-9]

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

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

\s

matches any whitespace character (equivalent to [\r\n\t\f\v \u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff])+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

7th Capturing Group

([+]?((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)([Ee][+-]?[0-9]+)?)

Match a single character present in the list below

[+]

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

8th Capturing Group

((0|[1-9][0-9]*)(\.[0-9]*)?|\.[0-9]+)

1st Alternative

(0|[1-9][0-9]*)(\.[0-9]*)?

9th Capturing Group

(0|[1-9][0-9]*)

1st Alternative

0

0 matches the character 0 with index 48_{10} (30_{16} or 60_{8}) literally (case sensitive)

2nd Alternative

[1-9][0-9]*

Match a single character present in the list below

[1-9]

1-9 matches a single character in the range between 1 (index 49) and 9 (index 57) (case sensitive)

Match a single character present in the list below

[0-9]

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

10th Capturing Group

(\.[0-9]*)?

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

Match a single character present in the list below

[0-9]

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

2nd Alternative

\.[0-9]+

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

Match a single character present in the list below

[0-9]

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

11th Capturing Group

([Ee][+-]?[0-9]+)?

Match a single character present in the list below

[Ee]

Ee

matches a single character in the list Ee (case sensitive)Match a single character present in the list below

[+-]

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

Match a single character present in the list below

[0-9]

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

\s

matches any whitespace character (equivalent to [\r\n\t\f\v \u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff])$ 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.

No Match

/

/

gm

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