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

/
/
gm

Test String

Code Generator

Generated Code

$re = '/(?P<group>(?P<starttag><(?P<tagname>p)[^>]*>)(?P<data>.*)(?P<endtag><\/\3>))/m'; $str = '<p>COVEMA</p> <p>PALMERO</p> <p>PLASTIFERRO</p> <p>UOCRA</p> <p>REPAS</p> <p>BTU</p> <p>PANEDILE</p> <p>ELEPRINT</p> <p>JOSÉ J. CHEDIACK</p> <p>NIRO CONSTRUCCIONES</p> <p>HELPORT</p> <p>BISCAYNE</p> <p>COARCO</p> <p>ESUCO</p> <p>CPC</p> <p>TEL 3</p> <p>CARTELLONE</p> <p>MACRO</p> <p>VIAL AGRO</p> <p>ISOLUX CORSÁN</p> <p>AFCP</p> <p>FINNING</p> <p>ROGGIO</p> <p>ROVELLA CARRANZA</p> <p>ACINDAR</p> <p>IERIC</p> <p>IGARRETA MÁQUINAS</p> <p>RIVA</p> <p>GRUPO ESTISOL</p> <p>IECSA</p> <p>ARMAFERRO</p> <p>BRICONS</p> <p>CNH INDUSTRIAL</p> <p>PAOLINI</p> <p>SERVIUR</p> <p>SANDVIK</p> <p>DECAVIAL</p> <p>ODEBRECHT</p> <p>ENAS</p> <p>SITRA</p> <p>SUPERCEMENTO</p> <p>JCR</p> <p>CONSTRUMEX</p> <p>BRIALES</p> <p>CAPUTO</p> <p>LUCIANO</p> <p>GALICIA</p> <p>VICTOR CONTRERAS</p> <p>SIKA ARGENTINA</p> <p>CRIBA</p> <p>BOETTO Y BUTTIGLIENGO</p> <p>MILICIC</p> <p>PERIODICO EL CONSTRUCTOR</p> <p>PHONERENTAL</p> <p>DOS ARROYOS</p> <p>MARTINEZ Y DE LA FUENTE</p> <p>AUSA</p> <p>LUIS LOSI</p> <p>AESA</p> <p>CONSTRUCTORA SUDAMERICANA</p> <p>PLANTEL</p> <p>PCR</p> <p>BANCO DE LA NACIÓN ARGENTINA</p> <p>SUBTERRÁNEOS DE BUENOS AIRES</p> <p>HOLA SIM</p> <p>JOSÉ LUIS TRIVIÑO</p> <p>TECHINT</p> <p>EDUARDO COLOMBI</p> <p>ALEMARSA</p> <p>CENTRO CONSTRUCCIONES</p> <p>TECNIPISOS</p> <p>XAPOR</p> <p>FONTANA NICASTRO</p> <p>CONCRET-NOR</p> <p>DYCASA</p> <p>BURGWARDT</p> <p>SULLAIR</p> <p>FONDO FIDUCIARIO FEDERAL DE INFRAESTRUCTURA REGIONAL</p> <p>FLOWTEX</p> <p>PETERSEN THIELE Y CRUZ</p> <p>LIHUÉ</p> <p>IRAM</p> <p>ESTUDIO YMAZ</p> <p>VIDOGAR</p> <p>BICE</p> <p>ROMERO CAMMISA</p> <p>BATIMAT</p> <p>ALBA CAUCIÓN</p> <p>PROBA</p> <p>ICF</p> <p>TECMA</p> <p>ALESTE</p> <p>DELEGACIÓN PROVINCIA DE BUENOS AIRES</p> <p>HIDRAVIAL</p> <p>BANCO CIUDAD</p> <p>LAMANNA</p>'; preg_match_all($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