Regular Expressions 101

Save & Share

  • Regex Version: ver. 1
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
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

r"
"
ms

Test String

Code Generator

Language

Generated Code

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Example { public static void main(String[] args) { final String regex = "<td width=\\\"70%\\\" class=\\\"tdbold\\\">\\s+<div >\\s*([^<&]+).*ที่อยู่\\s+([^<&]+).*โทร.\\s*([0-9๐-๙- ,]+)"; final String string = "\n" + "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n" + "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n" + " <head>\n" + " <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>\n" + "<script type=\"text/javascript\">\n" + " var _gaq = _gaq || [];\n" + " _gaq.push(['_setAccount', 'UA-18733385-1']);\n" + " _gaq.push(['_trackPageview']);\n" + " (function() {\n" + " var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;\n" + " ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';\n" + " var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);\n" + " })();\n" + "</script>\n" + " <title>ระบบสารสนเทศภฺมิศาสตร์ทรัพยากรสุขภาพ สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</title>\n" + " <script type=\"text/javascript\" src=\"jquery/jquery-1.3.2.min.js\"></script> \n" + " <script type=\"text/javascript\" src=\"jquery/jquery.easing.1.3.js\"></script> \n" + " <script type=\"text/javascript\" src=\"jquery/jquery.galleryview-1.1.js\"></script> \n" + " <script type=\"text/javascript\" src=\"jquery/jquery.timers-1.1.2.js\"></script> \n" + " <script type=\"text/javascript\" src=\"js/jquery_slide.js\"></script> \n" + " <link href=\"css/stylemap.css\" rel=\"stylesheet\" type=\"text/css\">\n" + " <script type=\"text/javascript\" src=\"../ckeditor/ckeditor.js\"></script>\n" + " <script type=\"text/javascript\">\n" + " //<![CDATA[\n" + " CKEDITOR.replace( 'message',{\n" + " height : 400,\n" + " width : 400,\n" + " } );\n" + " //]]>\n" + " </script>\n" + " <script type=\"text/javascript\" src=\"highslide/highslide-with-gallery.js\"></script>\n" + "<link rel=\"stylesheet\" type=\"text/css\" href=\"highslide/highslide.css\" />\n\n" + " <script type=\"text/javascript\">\n" + " hs.graphicsDir = 'highslide/graphics/';\n" + " hs.align = 'center';\n" + " hs.transitions = ['expand', 'crossfade'];\n" + " hs.outlineType = 'glossy-dark';\n" + " hs.wrapperClassName = 'dark';\n" + " hs.fadeInOut = true;\n\n" + " if (hs.addSlideshow) hs.addSlideshow({\n" + " interval: 4000,\n" + " repeat: false,\n" + " useControls: true,\n" + " fixedControls: 'fit',\n" + " overlayOptions: {\n" + " opacity: .6,\n" + " position: 'bottom center',\n" + " hideOnMouseOut: true}\n" + " });\n\n" + "</script>\n" + " </head>\n" + "<body>\n\n" + "<table align =\"center\" width=\"760\" cellpadding=\"0\" cellspacing=\"0\"><tr><td>\n" + "<div id=\"navcontainer\">\n" + " <ul id=\"navlist\">\n" + " <!-- CSS Tabs -->\n" + " \n" + "<li><a href=\"info.php?maincode=00001\" id=\"current\">ข้อมูลทั่วไป</a></li>\n" + "<li><a href=\"infopersonal.php?maincode=00001\">ข้อมูลบุคลากร</a></li>\n" + "<li><a href=\"infospecialty.php?maincode=00001\">แพทย์เฉพาะทาง</a></li>\n" + "<li><a href=\"infoequip.php?maincode=00001\">สถานที่และเครื่องมือแพทย์</a></li>\n" + "<li><a href=\"work.php?maincode=00001\">ผลงานเด่น</a></li>\n" + "<li><a href=\"login.php?maincode=00001\">เข้าสู่ระบบ</a></li>\n\n" + " </ul>\n" + " </div>\n" + " \n" + "</td></tr></table>\n" + "<!--table width=\"761\" align=\"center\" class=\"tableBorder\">\n" + "<tr>\n" + "<td width=\"753\"-->\n" + "<table width=\"650\" align=\"center\" bgcolor=\"#FFFFFF\" cellpadding=\"0\" cellspacing=\"0\">\n" + " <tr>\n" + " <td colspan=\"2\" class=\"tdhead650\" valign=\"middle\">ข้อมูลทั่วไป สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</td>\n" + " </tr>\n" + " <tr>\n" + " <td width=\"30%\">&nbsp;</td>\n" + " <td width=\"70%\">&nbsp;</td>\n" + " </tr>\n" + " <tr>\n" + " <td align=\"center\" valign=\"top\"> <div class=\"highslide-gallery\"> <a href=\"upload/logo/p_00001_190418_031102.png\" class=\"highslide\" onclick=\"return hs.expand(this)\">\n" + "<img src=\"upload/logo/p_00001_190418_031102.png\" alt=\"Highslide JS\"title=\"Click to enlarge\" width=\"100\" height=\"100\"/></a>\n" + "<div class=\"highslide-caption\"><center> สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</center></div></td>\n" + " <td width=\"70%\" class=\"tdbold\">\n" + " <div > สำนักงานสาธารณสุขจังหวัดสมุทรปราการ&nbsp;&nbsp;<a href=\"gmap.php?code=00001\" target=\"_blank\"><img src=\"image_res/2green.png\" title=\"แสดงในแผนที่\" border=\"0\"/></a></div><br />\n" + " <div> รหัส 00001</div><br />\n" + " <div>ที่อยู่ 19 ซอย 35 อัศวนนท์ 2 ถ.สุขุมวิท ต.ปากน้ำ อ.เมือง จ.สมุทรปราการ 10270 </div><br />\n" + " <div>ที่ตั้ง จ.สมุทรปราการ อ.เมืองสมุทรปราการ ต.ปากน้ำ หมู่ 0 </div> \n" + " <br>\n\n\n" + " \n" + " <div>โทร. 02-3895980&nbsp;&nbsp; แฟกซ์ 02-3951034 </div>\n" + "<br> \n\n" + " \n" + " <div>อีเมล์ -&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; เว็บไซต์ <a href=\"http://www.spko.moph.go.th/\" target=\"_new\" >www.spko.moph.go.th/</a></div></td>\n" + " </tr>\n" + " <tr>\n" + " <td>&nbsp;</td>\n" + " <td></td>\n" + " </tr>\n" + " <tr>\n" + " <td>&nbsp;</td>\n" + " <td class=\"trBottom\">ผู้บริหารและประวัติสถานพยาบาล</td>\n" + " </tr>\n" + " <tr>\n" + " <td align=\"center\"> <div class=\"highslide-gallery\"> <a href=\"upload/ceo/p_00001_140218_134154.jpg\" class=\"highslide\" onclick=\"return hs.expand(this)\">\n" + "<img src=\"upload/ceo/p_00001_140218_134154.jpg\" alt=\"Highslide JS\"title=\"Click to enlarge\" width=\"100\" height=\"100\"/></a>\n" + "<div class=\"highslide-caption\"><center> สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</center></div></td>\n" + " <td><br ><br />\n" + " <div >ชื่อผู้บริหาร <b>&nbsp;นพ.สวัสดิ์ อภิวัจนีวงศ์</b></div>\n" + " <br />\n" + " <div >\n" + " ประวัติสถานพยาบาล\n" + "<a href=\"info_history.php?maincode=00001\" title=\"อ่านประวัติสถานพยาบาล\"><b>เพิ่มเติม</b></a> <p>&nbsp;</p>\n\n" + " \n" + " </div>\n" + " </td>\n" + " </tr>\n" + " <tr>\n" + " <td>&nbsp;</td>\n" + " <td></td>\n" + " </tr>\n" + " \n" + " \n" + "</table>\n" + "<table align=\"center\">\n" + "<tr>\n" + "<td>\n" + "<body><div class=\"highslide-gallery\">\n\n" + " \n" + " <a href=\"upload/hospital/p_00001_190418_024043.jpg\" class=\"highslide\" onClick=\"return hs.expand(this)\">\n" + "<img src=\"upload/hospital/p_00001_190418_024043.jpg\" alt=\"Highslide JS\"title=\"Click to enlarge\" width=\"133\" height=\"100\"/></a>\n" + "<div class=\"highslide-caption\"><center> สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</center></div>\n" + " \n" + " <a href=\"upload/hospital/p_00001_190418_024156.jpg\" class=\"highslide\" onClick=\"return hs.expand(this)\">\n" + "<img src=\"upload/hospital/p_00001_190418_024156.jpg\" alt=\"Highslide JS\"title=\"Click to enlarge\" width=\"133\" height=\"100\"/></a>\n" + "<div class=\"highslide-caption\"><center> สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</center></div>\n" + " \n" + " <a href=\"upload/hospital/p_00001_190418_024306.jpg\" class=\"highslide\" onClick=\"return hs.expand(this)\">\n" + "<img src=\"upload/hospital/p_00001_190418_024306.jpg\" alt=\"Highslide JS\"title=\"Click to enlarge\" width=\"133\" height=\"100\"/></a>\n" + "<div class=\"highslide-caption\"><center> สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</center></div>\n" + " \n" + " <a href=\"upload/hospital/p_00001_190418_025428.jpg\" class=\"highslide\" onClick=\"return hs.expand(this)\">\n" + "<img src=\"upload/hospital/p_00001_190418_025428.jpg\" alt=\"Highslide JS\"title=\"Click to enlarge\" width=\"133\" height=\"100\"/></a>\n" + "<div class=\"highslide-caption\"><center> สำนักงานสาธารณสุขจังหวัดสมุทรปราการ</center></div>\n" + " <br>\n\n\n" + "</div>\n\n\n\n" + "</div>\n" + "</body>\n" + "</td>\n" + "</tr>\n" + "</table>\n\n" + "<table width=\"650\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\">\n" + "<tr>\n" + " <td align=\"right\" class=\"trBottom\">&nbsp;</td>\n" + " </tr>\n" + " <tr>\n" + " <td align=\"right\" >ข้อมูลวันที่ 6 ธ.ค. 2562 15:51</td>\n" + " </tr>\n" + "</table>\n" + "<!--/td></tr></table-->\n" + "<TABLE border ='0' width =\"650\" align=\"center\">\n" + "<tr><td>&nbsp;</td></tr>\n" + "<TR><TD width =100% align= \"center\"><a href=\"https://play.google.com/store/apps/details?id=com.hiso.hisomap4\" target=\"_blank\"><img src=\"app_android.png\" alt=\"ดาวน์โหลดได้ที่ Google Play\"/></a><!-- Begin ShinyStat Free code -->\n" + "<script type=\"text/javascript\" language=\"JavaScript\" src=\"http://codice.shinystat.com/cgi-bin/getcod.cgi?USER=healthHiso\"></script>\n" + "<noscript>\n" + "<a href=\"http://www.shinystat.com\" target=\"_top\">\n" + "<img src=\"http://www.shinystat.com/cgi-bin/shinystat.cgi?USER=healthHiso\" alt=\"Free hit counter\" border=\"0\" /></a>\n" + "</noscript><a href=\"https://itunes.apple.com/th/app/gis-health/id859027531?mt=8\" target=\"_blank\"><img src=\"app_ios.png\" alt=\"ดาวน์โหลดได้ที่ App Store\"/></a>\n" + "</TD><TD></TD></TR>\n" + "</TABLE>\n" + "</body>\n" + "</html>"; final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.DOTALL); final Matcher matcher = pattern.matcher(string); if (matcher.find()) { System.out.println("Full match: " + matcher.group(0)); for (int i = 1; i <= matcher.groupCount(); i++) { System.out.println("Group " + i + ": " + matcher.group(i)); } } } }

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 Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html