Regular Expressions 101

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/
[ ]*(.+):[ ]*\n?((?:.+\n?[^\s])*)
/
gm
Match a single character present in the list below
[ ]*
* Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)
matches the character literally (case sensitive)
1st Capturing Group
(.+)
.+
matches any character (except for line terminators)
+ Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)
: matches the character : literally (case sensitive)
Match a single character present in the list below
[ ]*
* Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)
matches the character literally (case sensitive)
\n?
matches a line-feed (newline) character (ASCII 10)
? Quantifier — Matches between zero and one times, as many times as possible, giving back as needed (greedy)
2nd Capturing Group
((?:.+\n?[^\s])*)
Non-capturing group
(?:.+\n?[^\s])*
* Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)
.+
matches any character (except for line terminators)
\n?
matches a line-feed (newline) character (ASCII 10)
Match a single character not present in the list below
[^\s]
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi 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.

Regular Expression
No Match

/
/
gm

Test String

Code Generator

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Generated Code

Loading code sample...
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report.
For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php

Regular Expressions 101

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