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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

/
/
g

Test String

Code Generator

Language

Generated Code

$re = '/((?:(?# path without "" )(?<opening>(?# \'C:/\', \'//\', \'//./<UNC/C:>\', \'//?/<UNC/C:>\' or \'%VariableWindows%\')(?<UNCPrefix>[\/\\\\][\/\\\\][?.][\/\\\\](?:UNC[\/\\\\])?)?(?<montage>\b[a-zA-Z]:[\/\\\\])|(?:(?:(?&UNCPrefix))|(?:[\/\\\\][\/\\\\](?!(?&montage))))|(?:%\w+%[\/\\\\]?))(?:(?# directory btw // )[^\/\\\\<>:"|?\n\r ][^\/\\\\<>:"|?\n\r]*(?<![ ])[\/\\\\])*(?:(?#we search for fileName only if next character is pathFriendly)(?=[^\/\\\\<>:"\'|?\n\r;, ])(?:(?#name file ? dir ?)(?:[^\/\\\\<>:"|?\n\r;, .](?: (?=\w))?(?:\*(?!= ))?(?!(?&montage)))+)?(?:(?#extention)\.\w+)*))|(?:(?# path quoted "" or \'\' )["\'](?&opening)(?=.*?["\'])(?:[^\/\\\\<>:\'"|?\n\r]+[\/\\\\]?)+?["\']))/'; $str = '\\\\LOCALHOST\\c$\\temp\\test-file.txt" @"c:\\temp\\test-file.txt", @"\\\\127.0.0.1\\c$\\temp\\test-file.txt", @"\\\\LOCALHOST\\c$\\ temp\\test-file.txt", @"\\\\.\\c:\\temp\\test-file.txt", @"\\\\?\\c:\\temp\\est-file.txt", @"\\\\.\\UNC\\LOCALHOST\\c$\\temp\\test-file.txt", @"\\\\127.0.0.1\\c$\\temp\\test-file.txt" file:///C:/Users/Downloads/20220516_32289275_1049383.pdf file://p-eco2.rd.fr/vol_H0037_01$/599/livraison/20220516_32289275_1049383.pdf --> couper les path apres le \'\\ \', meme que on est arrivé au fichier c:\\temp\\test-file.txt", \\\\127.0.0.1\\c$\\temp\\test-file.txt", \\\\LOCALHOST\\c$\\ temp\\test-file.txt", \\\\LOCALHOST\\c$ \\temp\\test-file.txt", \\\\.\\c:\\temp\\t\\est-file.txt", \\\\?\\c:\\temp\\test-file.txt", \\\\.\\UNC\\LOCALHOST\\c$\\temp\\test-file.txt", \\\\?\\UNC\\ServerName\\ temp\\test-file.txt", \\\\127.0.0.1\\c$\\temp\\test-file.txt" \\\\?\\server1\\e:\\utilities\\\\filecomparer\\ C:/test\\gvk.hv/fgfjgjj bdsdfus(fg) C:/test\\gvkhv/../fgfjgjjb/yfigfi C:/test\\gvk.hv/fgfj.gjjb/uhloext C:/test\\gvk.hv/fgfj.gjjb/uhloext.ds C:/test\\gvk.hv/fgfj.gjjb/uhloext C:/UNC/test\\gvk.hv/fgfj.gjjb/uhloext.ds Site0 / 3: - Warning . See log file \'C:\\ProgramData\\InfoVista\\Planet 7.4\\7.4\\RPE\\Log\\Plugins\\Universal_Model_masked\\log_Universal_Model.txt\' for details C:/test\\gvk.hv/fgfj.gjjb/uhloext.ds.yi : gf \\\\b-renice\\sauvegardes\\B-HIER\\GEO\\Geo_NetAct_Atoll_Planet\\UR_Est\\Polygon\\Haguenau\\Building\\Haguenau hgtfhyt "C:/te-st.html" "C:/te-st.html" gd"dhbcsk "C:/te/dsst.ikpo fdsf "C:\\test" "C:// test.html" gd "//te s t/e, llo.html C:/test\\f/uhlo/. C://te?st.html b-renice\\sauvegardes\\B-HIER\\GEO\\Geo_NetAct_Atoll_Planet\\UR_Est\\Custom Data" ; dfsdf "\\\\b-renice\\sauvegardes\\B-HIER\\GEO\\Geo_NetAct_Atoll_Planet\\UR_Est\\Custom Data" ; dfsdf "\\\\ Haguenau_Building.tab : Data format of \\\\b-renice\\sauvegardes\\B-HIER\\GEO\\Geo_NetAct_Atoll_Planet\\UR_Est\\Polygon\\Haguenau\\Building\\Haguenau Building.* C: is invalid Haguenau_Building.tab : Data format of \\\\b-renice\\sauvegardes\\B-HIER\\GEO\\Geo NetAct Atoll_Planet\\UR_Est\\Polygon\\Haguenau\\Building\\Haguenau Building.TAB, is invalid Haguenau_Building.tab : Data format of \\\\b-renice\\sauvegardes\\B-HIER\\GEO\\Geo_NetAct_Atoll_Planet\\UR_Est\\Polygon\\Haguenau\\Building\\Haguenau Buildi* ng.*, is invalid C:/test/../hjgbkl C:/test/../hjgbkl.gfgdfgrdgfdgr C:/test/../hjgbkl C:/test.html C://test/ .h/hel,lo.html//test/./hello.html C:/test//hello.html //test //hello.html /test "%tmp%/fsdfs" %tmp%/fsdfs ERROR 8/31/2021 - 6:45:39 PM HighResClutter .RasterFile : \\\\b-ren ice\\sauv egardes\\B-HIER\\GEO%dsq%\\NewJersey_NewYork\\DTM\\DTM\\CENTRAL_JERSE..Y_New_York_2 m_Z18N_0_DTM_02_06.bil : Le fichier spécifié est introuvable. \\\\b-ren ice\\sauv egardes\\..\\B-HIER\\GEO\\NewJersey_NewYork\\DTM\\DTM\\CENTRAL_JERSE..Y_New_York_2 m_Z18N_0_DTM_02_06.bil C:\\b-ren ice\\sauv egardes\\B-HIER\\GEO\\NewJersey_NewYork\\DTM\\DTM\\CENTRAL_JERSE..Y_New_York_2 m_Z18N_0_DTM_02_06.bil \\\\b-ren ice\\sauv egardes\\B-HIER\\GEO\\NewJersey_NewYork\\DTM\\DTM\\CENTRAL_JER SE.Y_New_York_2 m_Z18N_0_DTM_02_06.bil. //test.html \\\\10.1.1.107 //10.1.1.107/test.html //10.1.1.107/te st/hello.html //10.1.1.107/test/hello //test/hello.txt //test/hello.txt. /test/html /tes?t/html /test.html test.html // / \\\\\\rged\\bfg \\\\ /t!esrtr C:/hel**o \\\\.\\UNC\\Server\\Share\\Test\\Foo.txt \\\\?\\UNC\\Server\\Share\\Test\\Foo.txt Pour les chemins UNC de périphérique, la partie serveur/partage forme le volume. Par exemple, dans \\\\?\\server1\\e:\\utilities\\\\filecomparer\\ , la partie serveur/partage est server1\\utilities . Ceci est important quand '; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); // Print the entire match result var_dump($matches);

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