Regular Expressions 101

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/
Billing Package for:(\w{3})\s-\sBL:(\w+)\s+TRANSID:(\d+)\s+-\s+(.+)
/
gm
Billing Package for:
matches the characters Billing Package for: literally (case sensitive)
1st Capturing Group
(\w{3})
\w
matches any word character (equivalent to [a-zA-Z0-9_])
{3} matches the previous token exactly 3 times
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
- matches the character - with index 4510 (2D16 or 558) literally (case sensitive)
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
BL:
matches the characters BL: literally (case sensitive)
2nd Capturing Group
(\w+)
\w
matches any word character (equivalent to [a-zA-Z0-9_])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\s
matches any whitespace character (equivalent to [\r\n\t\f\v ])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
TRANSID:
matches the characters TRANSID: literally (case sensitive)
3rd Capturing Group
(\d+)
\d
matches a digit (equivalent to [0-9])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\s
matches any whitespace character (equivalent to [\r\n\t\f\v ])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
- matches the character - with index 4510 (2D16 or 558) literally (case sensitive)
\s
matches any whitespace character (equivalent to [\r\n\t\f\v ])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
4th Capturing Group
(.+)
.
matches any character (except for line terminators)
+ matches the previous token between one and unlimited 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

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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