Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

$re = '/bugid.*\n(.*)/m'; $str = 'bugid = 461 comment#461 = drop-cap position for hanging, jutting, etc bugid = 466 comment#466 = Positioning printouts on the page bugid = 480 comment#480 = Being able to *switch* items in the Distribute/Align menu bugid = 492 comment#492 = Footnotes which stay on the same page as the associated word bugid = 498 comment#498 = Typography Preference Settings as part of Paragraph Styles bugid = 502 comment#502 = Multiselection in items Overview bugid = 504 comment#504 = We need more accuray object selection bugid = 505 comment#505 = Object sellection with Ctrl bugid = 533 comment#533 = move objects in the object-tree bugid = 555 comment#555 = rotating objects without rotate-cursor ? bugid = 575 comment#575 = (in general multiple application of properties) bugid = 577 comment#577 = Paragraph Styles -> Kerning and language options missing bugid = 579 comment#579 = right-click paragraph, save as paragraph style bugid = 689 comment#689 = basepoint of lines cannot be set to the middle or diagonal one bugid = 835 comment#835 = Measurement attachment to the guides and frames bugid = 889 comment#889 = inverse bezier tool handling bugid = 950 comment#950 = The search and replace dialogue should not be modal because the way it is now you cannot cut and paste into it. bugid = 990 comment#990 = Mail-Merge bugid = 1008 comment#1008 = ? bugid = 1032 comment#1032 = Request: PDF Bookmarks at arbritrary locations within text frames. bugid = 1034 comment#1034 = Edit Paste disabled after copy from another program, but Control V works bugid = 1037 comment#1037 = GetTextLength returns 0 for non-empty frame bugid = 1069 comment#1069 = Auto-adjust size of text box to the text bugid = 1085 comment#1085 = Better text on path control bugid = 1086 comment#1086 = Lines styles with two or more parallel lines bugid = 1094 comment#1094 = Importing multipage PDFs must give options for importing a selection of pages see also 1352 (dup) bugid = 1118 comment#1118 = Give instant access to Style editor from within the Properties palette>Text bugid = 1212 comment#1212 = styles for drop caps bugid = 1321 comment#1321 = Individual DPI settings bugid = 1398 comment#1398 = Improve memory efficiency of raster image export bugid = 1406 comment#1406 = Add text metrics to scripter bugid = 1410 comment#1410 = Allow automatic text frames after document has been started bugid = 1423 comment#1423 = Single key-stroke to kern letters... bugid = 1462 comment#1462 = Lines (borders) on frames are drawn from the center of the edge to the outside bugid = 1463 comment#1463 = Add pdf export "templates" bugid = 1474 comment#1474 = RTF Import bugid = 1475 comment#1475 = Bad hyphenating implementation bugid = 1518 comment#1518 = PrefsTable breaks if indexing is started from (1,0) bugid = 1540 comment#1540 = Issue with stylesheet and emphasis like italic or bold fonts bugid = 1569 comment#1569 = regression from 1.2 bugid = 1592 comment#1592 = New textframes not linkable to "Autoframes" bugid = 1598 comment#1598 = - assigned Missing preference to text importer bugid = 1622 comment#1622 = Splitting the import menu bugid = 1627 comment#1627 = improvement for handling changes in images on disc bugid = 1629 comment#1629 = A need to run menu items from the scriptor for automation purposes bugid = 1630 comment#1630 = A macro recorder to build a script automatically from users actions. bugid = 1663 comment#1663 = ability to assign shortcut keys to the running of a script bugid = 1671 comment#1671 = - needs testing bugid = 1678 comment#1678 = Search in Picture Management should search user specified directory list, pick up all matching images in dir. bugid = 2264 comment#2264 = - Support more PDF/X-x versions bugid = 2460 comment#2460 = - Support JDF'; $subst = "\1\n"; $result = preg_replace($re, $subst, $str); echo "The result of the substitution is ".$result;

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