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
Processing...

Test String

Code Generator

Language

Generated Code

$re = '~<{if \$data\.nowPage>1}>.*?</div>\R*<{/if}>~is'; $str = ' I\'m looking for a regular expression to delete htmlA. The border start from <{if $data.nowPage>1}> to /div> 1 breakLine <{/if}> htmlA <{if $data.nowPage>1}> <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div> <div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.nowPage-1}>"><span class="icon arrow-left"></span></a></div> <{/if}> I have tried $fullHtml = readFileData($file); preg_match("/(<{if \\\\\\$data\\.nowPage>1}>(.*?)<\\/div>)(\\s)(.+?)<{\\/if}>/si",$fullHtml,$htmlA); //$fullHtml = preg_replace(...,\'\',$fullHtml); but it stopped too early and why print_r($htmlA) shows 5 keys? Array ( [0] => <{if $data.nowPage>1}> <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div> <div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}> [1] => <{if $data.nowPage>1}> <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div> [2] => <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a> [3] => [4] => <div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}> ) fullHtml. line3 to line6. <div class="pageContainer"> <div class="pageBox"> <{if $data.nowPage>1}> <div class="pageArrow pageFirst"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=1"><span class="icon arrow-first"></span></a></div> <div class="pageArrow pagePrev"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.nowPage-1}>"><span class="icon arrow-left"></span></a></div> <{/if}> <{for $i=$data.nowPage-$data.pageFit to $data.totalPage}> <{if $data.nowPage == ($i)}> <div class="pageBtn active"><a href="javascript:void(0);"><{$i}></a></div> <{else if $i>($data.nowPage+$data.pageFit)}> <div class="pageMore"><span class="icon moreIcon"></span></div> <{break}> <{else if $i>0}> <{if $i==$data.nowPage-$data.pageFit && $i>1}> <div class="pageMore"><span class="icon moreIcon"></span></div> <{/if}> <div class="pageBtn"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$i}>"><{$i}></a></div> <{else}> <{/if}> <{/for}> <{if $data.nowPage<$data.totalPage}> <div class="pageArrow pageNext"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.nowPage+1}>"><span class="icon arrow-right"></span></a></div> <div class="pageArrow pageLast"><a href="?<{if !empty($data.years)}>y=<{$data.years}><{/if}><{if !empty($data.month)}>&m=<{$data.month}><{/if}>&p=<{$data.totalPage}>"><span class="icon arrow-last"></span></a></div> <{/if}> </div> </div>'; 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