Regular Expressions 101

Save & Manage Regex

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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
Processing...

Test String

Substitution
Processing...

Code Generator

Language

Generated Code

$re = '/\<(\w+)\s[^>]*?style=([\"|\']).*?\2\s?[^>]*?(\/?)>/mi'; $str = ' div\' is a draw:frame. --><div style="height:2.818cm;width:26.67cm; padding:0; " class="P9"><p><img src="" /></p></div><!--Next \' div\' is a draw:frame. --><div style="height:2.086cm;width:19.05cm; padding:0; " class="P9"><p><img src="" /></p></div><!--Next \' div\' is a draw:frame. --><div style="height:3.303cm;width:25.21cm; padding:0; " class="P9"><p><img src="" /></p></div><!--Next \' div\' is a draw:frame. --><div style="height:0.949cm;width:15.864cm; padding:0; " class="P9"><p><img src="" /></p></div></div><div style="clear:both; line-height:0; width:0; height:0; margin:0; padding:0;"> </div><!--Next \'div\' was a \'draw:page\'.--><div id="page5" class="dp3"> <!--Next \' div\' is a draw:frame. --><div style="height:3.255cm;width:25.197cm; padding:0; " class="P4"><!--Next \'div\' was a \'draw:text-box\'.--><div style=""><ol><li><p style="margin-left:0cm;"><span style="display:block;float:left;min-width:0cm"><!-- --></span>Account Performance YoY Revenue<span class="odfLiEnd"/> </p></li></ol></div></div><!--Next \' div\' is a draw:frame. --><div style="height:5.715cm;width:24.306cm; padding:0; " class="P9"><p><img src="" /></p></div><!--Next \' div\' is a draw:frame. --><div style="height:4.251cm;width:24.13cm; padding:0; " class="P9"><p><img src="" /></p></div></div><div style="clear:both; line-height:0; width:0; height:0; margin:0; padding:0;"> </div><!--Next \'div\' was a \'draw:page\'.--><div id="page6" class="dp3"> <!--Next \' div\' is a draw:frame. --><div style="height:1.839cm;width:25.197cm; padding:0; " class="P4"><!--Next \'div\' was a \'draw:text-box\'.--><div style=""><ol><li><p style="margin-<span style="display:block;float:left;min-width:0cm"><!-- --></span>Top Level Statistics - YTD<span class="odfLiEnd"/> </p></li></ol></div></div><!--Next \' div\' is a draw:frame. --><div style="height:17.145cm;width:25.197cm; padding:0; " class="P4"><!--Next \'div\' was a \'draw:text-box\'.--><div style=""><ol><li><p style="margin-left:0cm;"><span style="display:block;float:left;min-width:0cm"><!-- --></span>Total Campaigns (all): 40<span class="odfLiEnd"/> </p></li><li><p style="margin-left:0cm;"><span style="display:block;float:left;min-width:0cm"><!-- --></span>Total Ad Groups: 107<span class="odfLiEnd"/> </p></li><li><p style="margin-left:0cm;"><span style="display:block;float:left;min-width:0cm"><!-- --></span>Top Performing Campaigns ROI<span class="odfLiEnd"/> </p></li></ol><ul><li><ol><li><p style="margin-left:0cm;"><span style="display:block;float:left;min-width:0cm"><!-- --></span>GSN Orchid Brand: $11,491.30, Yield $149,532 (ROI = 1300%)<span class="odfLiEnd"/> </p></li><li><p style="margin-left:0cm;"><spa'; $subst = "<$1$3>"; $result = preg_replace($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