The regular expression solves, how to handle

Regular expression solving
Two file names,
Format of file name: file name + Create/recreate + date-txt
1. Text One creation 2012-05-23.txt
2, Text 2 re-create 2012-05-22.txt

The "Create 2012-05-23" and "recreate 2012-05-22.txt" in 1 and 2 are matched by the regular.
File name creation/re-creation + Date part

The expression of the evidence ...
What if I write in C?

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PHP Code

$html =<<
  
  
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() group
[\w-] matches any of the inside.
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