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

/
/
g

Test String

Code Generator

Language

Generated Code

$re = '/Gesamtenergie.*\n.*\n*\s*\s(\d*)/'; $str = '<!DOCtype HTML PUBLIC "-//W3C//Dtd HTML 4.0 Transitional//EN"> <html> <head> <meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"> <meta name="Generator" CONTENT="ChrisB"> <title>PV Webserver</title> </head> <body nof="(MB=(DefaultMasterborder, 65, 60, 150, 10), L=(HomeLayout, 700, 600))" bgcolor="#EAF7F7" text="#000000" link="#0033CC" vlink="#990099" alink="#FF0000" topmargin=0 leftmargin=0 marginwidth=0 marginheight=0> <form method="post" action=""> <table cellspacing="0" cellpadding="0" width="770" nof="ly"> <tr><td height="5"></td></tr> <tr><td width="190" height="55"></td> <td width="400"> <font face="Arial,Helvetica,Geneva,Sans-serif,sans-serif" size="+3"> PIKO 5.5 <br><font size="+1"> S_Power (220) </font> </font> </td> <td><img alt="Logo" height="42" width="130" src="KSE.gif"></td> </tr> </table> <font face="Arial,Helvetica,Geneva,Sans-serif,sans-serif"> <table Border="0" width="100%"><tr> <td width="150"></td> <td> <hr> </td> </tr></table> <table cellspacing="0" cellpadding="0" width="770"> <tr><td></td></tr> <tr> <td width="190"></td> <td colspan="2"> <b>AC-Leistung</b></td> <td>&nbsp</td> <td> <b>Energie</b></td></tr> <tr><td height="10"></td></tr> <tr> <td width="190"></td> <td width="100"> aktuell</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="140">&nbsp W</td> <td width="100"> Gesamtenergie</td> <td width="70" align="right" bgcolor="#FFFFFF"> 33763</td> <td width="50">&nbsp kWh</td> <td>&nbsp</td></tr> <tr height="2"><td></td></tr> <tr> <td width="190"></td> <td width="100"> &nbsp</td> <td width="70" align="right"> &nbsp</td> <td width="140">&nbsp</td> <td width="100"> Tagesenergie</td> <td width="70" align="right" bgcolor="#FFFFFF"> 22.85</td> <td width="50">&nbsp kWh</td> <td>&nbsp</td></tr> <tr height="5"><td></td></tr> <tr> <td width="190"></td> <td width="100"> Status</td> <td colspan="4"> Aus</td> <td>&nbsp</td></tr> <tr height="8"><td></td></tr> <tr><td colspan="7"> <table align="top" width="100%"><tr> <td width="182"></td> <td><hr size="1"></font></td></tr> <tr><td height="5"></td></tr></table> </td></tr> <tr> <td width="190"></td> <td colspan="2"> <b>PV-Generator</b></td> <td width="140">&nbsp</td> <td colspan="2"> <b>Ausgangsleistung</b></td> <td width="30">&nbsp</td> <td>&nbsp</td></tr> <tr><td height="10"></td></tr> <tr> <td width="190"></td> <td width="100"> <u>String 1</u></td> <td width="70">&nbsp</td> <td width="140">&nbsp</td> <td width="95"> <u>L1</u></td> <td width="70">&nbsp</td> <td width="30">&nbsp</td> <td>&nbsp</td></tr> <tr> <td width="190"></td> <td width="100"> Spannung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="140">&nbsp V</td> <td width="100"> Spannung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="30">&nbsp V</td> <td>&nbsp</td></tr> <tr height="2"><td></td></tr> <tr valign="top" align="left"> <td width="190">&nbsp</td> <td width="100"> Strom</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="140">&nbsp A</td> <td width="100"> Leistung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="30">&nbsp W</td> <td>&nbsp</td></tr> <tr height="22"><td></td></tr> <tr> <td width="190"></td> <td width="100"> <u>String 2</u></td> <td width="70">&nbsp</td> <td width="140">&nbsp</td> <td width="100"> <u>L2</u></td> <td width="70">&nbsp</td> <td width="30">&nbsp</td> <td>&nbsp</td></tr> <tr> <td width="190"></td> <td width="100"> Spannung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="140">&nbsp V</td> <td width="100"> Spannung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="30">&nbsp V</td> <td>&nbsp</td></tr> <tr height="2"><td></td></tr> <tr valign="top" align="left"> <td width="190">&nbsp</td> <td width="100"> Strom</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="140">&nbsp A</td> <td width="100"> Leistung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="30">&nbsp W</td> <td>&nbsp</td></tr> <tr height="22"><td></td></tr> <tr> <td width="190"></td> <td width="100"> <u>String 3</u></td> <td width="70">&nbsp</td> <td width="140">&nbsp</td> <td width="100"> <u>L3</u></td> <td width="70">&nbsp</td> <td width="30">&nbsp</td> <td>&nbsp</td></tr> <tr> <td width="190"></td> <td width="100"> Spannung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="140">&nbsp V</td> <td width="95"> Spannung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="30">&nbsp V</td> <td>&nbsp</td></tr> <tr height="2"><td></td></tr> <tr valign="top" align="left"> <td width="190">&nbsp</td> <td width="95"> Strom</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="140">&nbsp A</td> <td width="95"> Leistung</td> <td width="70" align="right" bgcolor="#FFFFFF"> x x x&nbsp</td> <td width="30">&nbsp W</td> <td>&nbsp</td></tr> <tr><td height="15"></td></tr> <tr><td colspan="7"> <table align="top" width="100%"> <tr><td width="182"></td> <td><hr size="1"></font></td> </tr><tr><td height="5"></td></tr></table> </td></tr></table> <table cellspacing="0" cellpadding="0" width="770"> <tr><td width="190"></td> <td><font face="Arial,Helvetica,Geneva,Sans-serif"> <b>RS485 Kommunikation</b></td></tr> <tr><td height="8"></td></tr> <tr><td width="190"></td> <td><font face="Arial,Helvetica,Geneva,Sans-serif"> Wechselrichter&nbsp <input type="Text" name="edWrNr" value="220" size="3" maxlength="3"> <input type="submit" value="Anzeigen/Aktualisieren"> </td></tr><tr><td height="10"></td></tr> </table> </td></tr></table></font> <hr> <table cellspacing="0" cellpadding="0" width="770"> <tr><td height="5"></td></tr> <tr><td width="190"></td> <td width="330"> <font face="Arial,Helvetica,Geneva,Sans-serif,sans-serif"> <a href="LogDaten.dat">Historie</a> &nbsp &nbsp &nbsp <a href="Info.fhtml">Infoseite</a></font></td> <td align="right"> <font face="Arial,Helvetica,Geneva,Sans-serif,sans-serif"> <a href="Solar2.fhtml">Einstellungen</a></font></td> <td width="50"></td> </tr></table></font> </form> </body> </html> '; 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