Regular Expressions 101

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~
^browse/(coffee|goodies)/([A-Za-z0-9\%\+\-])/([0-9])/
~
gm
^ asserts position at start of a line
browse/ matches the characters browse/ literally (case sensitive)
1st Capturing Group
(coffee|goodies)
1st Alternative
coffee
coffee matches the characters coffee literally (case sensitive)
2nd Alternative
goodies
goodies matches the characters goodies literally (case sensitive)
/ matches the character / literally (case sensitive)
2nd Capturing Group
([A-Za-z0-9\%\+\-])
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 % literally (case sensitive)
\+ matches the character + literally (case sensitive)
\- matches the character - literally (case sensitive)
/ matches the character / literally (case sensitive)
3rd Capturing Group
([0-9])
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)
/
matches the character / literally (case sensitive)
? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)
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

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