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

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/<div\s+id="lark-mail-quote-[^<>]+>/m'; $str = '<div style="list-style-position: inside; margin-top: 16px;" id="lark-mail-quote-164500864" class="quote1645084723054 quoteRendered"><div class="adit-html-block adit-html-block--collapsed"><div style="width: 100%; height: 1px; margin-top: 16px; padding-top: 16px; border-top-width: 1px; border-top-style: solid; border-top-color: rgb(222, 224, 227); display: none;" id="quote-divider-line"></div><div><div style="color:rgb(143, 149, 158)" class="adit-html-block__attr"><div id="lark-mail-quote-1013dab007b34a9dc6d40d1f3df7deaa" class="quoteRendered"><div id="lark-mail-quote-6f7b0bbbbcdd7c4219b05c0fd16606c1" class="quoteRendered"><div style="padding-bottom:8px;word-break:break-word;color:#8F959E !important"><div style="color:#8F959E !important"><span style="color:#646A73">发件人：</span><span style="white-space:normal">"蓝灿荣"&lt;<a style="overflow-wrap:break-word;white-space:pre-wrap;hyphens:auto;word-break:break-word;cursor:pointer;text-decoration:none;color:unset" href="mailto:lancanrong@bytedance.com" rel="nofollow noopener noreferrer">lancanrong@bytedance.com</a>&gt;</span></div><div style="color:#8F959E !important"><span style="color:#646A73">时间：</span> 2022年2月16日 (周三) 18:50</div><div style="color:#8F959E !important"><span style="color:#646A73">主题：</span> 回复：[External] 测试邮件引用-新旧新旧</div><div style="color:#8F959E !important"><span style="color:#646A73">收件人：</span><span style="white-space:normal">"lancanrong"&lt;<a style="overflow-wrap:break-word;white-space:pre-wrap;hyphens:auto;word-break:break-word;cursor:pointer;text-decoration:none;color:unset" href="mailto:lancanrong1@zijietiaodongs.top" rel="nofollow noopener noreferrer">lancanrong1@zijietiaodongs.top</a>&gt;</span></div></div></div></div></div><div style="margin-top:8px"><div><div><div style="line-height:1.6;font-size:0.875rem"><div dir="auto" class=""><span>444444444444444444444444444444444444</span></div><div id="lark-mail-quote-164500862" style="padding-left:12px;border-left:0.5px solid rgb(187,191,196)" class="quoteRendered"><div><blockquote style="padding:0px;margin:0px" id="lark-mail-block-content-164500862" class=""><div id="lark-mail-quote-35f365c7aff801f9d443621343497d1c" class="quoteRendered"><div id="lark-mail-quote-07788d8c442dc2ee4e026d9ae58bddfa" class="quoteRendered"><div style="color:rgb(143,149,158)" id="lark-mail-block-attr-164500862" class="">于2022年2月16日 (周三) 18:50 &lt;<a style="color:rgb(51,112,255)" href="mailto:lancanrong1@zijietiaodongs.top" rel="nofollow noopener noreferrer">lancanrong1@zijietiaodongs.top</a>&gt; 写道:</div><blockquote id="lark-mail-block-content-164500862" class="" style="padding:0px;margin:8px 0px 0px"><div><div style="white-space:pre-wrap;white-space:pre-wrap;margin-top:4px;margin-bottom:4px;line-height:1.6">333333333333333333333333333333333333333333333333333 </div><div id="lark-mail-quote-164500860" style="list-style-position:inside;margin-top:12px" class="quoteRendered"><div class="adit-html-block adit-html-block--collapsed"><div style="width:100%;height:1px;margin-top:16px;padding-top:16px;border-top-width:1px;border-top-style:solid;border-top-color:rgb(222,224,227)"></div><div><div id="lark-mail-block-attr-164500862" class="" style="color:rgb(143,149,158)"><div style="margin-top:12px" id="lark-mail-quote-5713ee9ef8fa0880a0db5aca669dc892" class="quoteRendered"><div style="margin-top:12px" id="lark-mail-quote-1a8ef6be06d3729d44846305e872806d" class="quoteRendered"><div style="padding-bottom:8px;word-break:break-word;color:#8f959e!important"><div style="color:#8f959e!important"><span style="color:#646a73">发件人：</span><span style="white-space:normal">"蓝灿荣"&lt;<a href="mailto:lancanrong@bytedance.com" style="white-space:pre-wrap;word-break:break-word;text-decoration:none;color:rgb(51,112,255)" rel="nofollow noopener noreferrer">lancanrong@bytedance.com</a>&gt;</span></div><div style="color:#8f959e!important"><span style="color:#646a73">时间：</span> 2022年2月16日 (周三) 18:49</div><div style="color:#8f959e!important"><span style="color:#646a73">主题：</span> 回复：[External] 测试邮件引用-新旧新旧</div><div style="color:#8f959e!important"><span style="color:#646a73">收件人：</span><span style="white-space:normal">"lancanrong"&lt;<a href="mailto:lancanrong1@zijietiaodongs.top" style="white-space:pre-wrap;word-break:break-word;text-decoration:none;color:unset" rel="nofollow noopener noreferrer">lancanrong1@zijietiaodongs.top</a>&gt;</span></div></div></div></div></div><div style="margin-top:8px"><div><div><div style="line-height:1.6;font-size:0.875rem"><div class="" dir="auto"><span>22222222222222222222222222222222222222222222222222222</span></div><div class="quoteRendered" style="padding-left:12px;border-left:0.5px solid rgb(187,191,196);margin-top:12px" id="lark-mail-quote-164500858"><div><blockquote class="" id="lark-mail-block-content-164500858" style="padding:0px;margin:0px"><div style="margin-top:12px" id="lark-mail-quote-f9f9c5db21625596a309d374d3cbde00" class="quoteRendered"><div style="margin-top:12px" id="lark-mail-quote-c697014ae5f2a77a28ee6d25e2e4be6e" class="quoteRendered"><div class="" id="lark-mail-block-attr-164500858" style="color:rgb(143,149,158)">于2022年2月16日 (周三) 18:49 &lt;<a href="mailto:lancanrong1@zijietiaodongs.top" style="color:rgb(51,112,255)" rel="nofollow noopener noreferrer">lancanrong1@zijietiaodongs.top</a>&gt; 写道:</div><blockquote style="padding:0px;margin:8px 0px 0px" class="" id="lark-mail-block-content-164500858"><div><div style="white-space:pre-wrap;white-space:pre-wrap;margin-top:4px;margin-bottom:4px;line-height:1.6">111111111111111111111111111 </div><div style="white-space:pre-wrap;margin-top:4px;margin-bottom:4px;line-height:1.6;text-align:left"><img data-realheight="280" data-realwidth="280" style="max-width: 100%; height: auto; max-height: none;" src="cid:3881ACB5-1580-41CA-8098-38694DB9774E_msgTokenboxcnMHsyNi36OGbKUMVR0WQRCc" loading="cid:3881ACB5-1580-41CA-8098-38694DB9774E_msgTokenboxcnMHsyNi36OGbKUMVR0WQRCc"></div><div></div><div> 顶顶顶顶顶顶顶顶</div><div> 撒发达分的的撒打发灌灌灌灌灌灌灌灌</div><div style="white-space:pre-wrap;margin-top:4px;margin-bottom:4px;line-height:1.6"></div></div></blockquote></div></div></blockquote></div></div></div></div></div></div></div></div></div><div style="white-space:pre-wrap;margin-top:4px;margin-bottom:4px;line-height:1.6;text-align:left"><img src="cid:3881ACB5-1580-41CA-8098-38694DB9774E_msgTokenboxcnMHsyNi36OGbKUMVR0WQRCc" style="max-width: 100%; height: auto; max-height: none;" loading="cid:3881ACB5-1580-41CA-8098-38694DB9774E_msgTokenboxcnMHsyNi36OGbKUMVR0WQRCc"><img data-realheight="320" data-realwidth="920" width="474" src="cid:6a880d43-3e11-4f9e-b0d7-1ed8c7dd4bad_msgTokenboxcnPkvwAxHFdjiDRi0YSSalIh" style="max-width: 100%; height: auto; max-height: none;" loading="cid:6a880d43-3e11-4f9e-b0d7-1ed8c7dd4bad_msgTokenboxcnPkvwAxHFdjiDRi0YSSalIh"></div><div> 顶顶顶顶顶顶顶顶</div><div> 撒发达分的的撒打发灌灌灌灌灌灌灌灌</div><div style="white-space:pre-wrap;margin-top:4px;margin-bottom:4px;line-height:1.6"></div></div></blockquote></div></div></blockquote></div></div></div></div></div></div></div></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