Regular Expressions 101

Explanation

Pro

(?ix)applies the following effective flags to the remainder of the pattern: gmix

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Atomic Group(?>[^\S ]\s*|\s{2,})

1st Alternative[^\S ]\s*

Negated Character Class[^\S ]

\Sany non-whitespace character

the literal (32₁₀ / 40₈ / 20₁₆)

\s*any whitespace character, repeated any number of times

2nd Alternative\s{2,}

\s{2,}any whitespace character, repeated at least 2 times

Positive Lookahead(?=(?:(?:[^<]++|<(?!\/?(?:textarea|pre)\b))*+)(?:<(?>textarea|pre)\b|\z))

Non-Capturing Group(?:(?:[^<]++|<(?!\/?(?:textarea|pre)\b))*+)

Non-Capturing Group(?:[^<]++|<(?!\/?(?:textarea|pre)\b))*+

*+repeats the group contents below any number of times:

1st Alternative[^<]++

Negated Character Class[^<]++

++matches at least one character outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

2nd Alternative<(?!\/?(?:textarea|pre)\b)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Negative Lookahead(?!\/?(?:textarea|pre)\b)

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:textarea|pre)

1st Alternativetextarea

textareathe literal text textarea (case insensitive)

2nd Alternativepre

prethe literal text pre (case insensitive)

\ban ASCII word boundary

Non-Capturing Group(?:<(?>textarea|pre)\b|\z)

1st Alternative<(?>textarea|pre)\b

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Atomic Group(?>textarea|pre)

1st Alternativetextarea

textareathe literal text textarea (case insensitive)

2nd Alternativepre

prethe literal text pre (case insensitive)

\ban ASCII word boundary

2nd Alternative\z

\zend of string

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(?ix)(?>[^\S ]\s*|\s{2,})(?=(?:(?:[^<]++|<(?!\/?(?:textarea|pre)\b))*+)(?:<(?>textarea|pre)\b|\z))

New

<body>
  <section id="fd-container" class="bgFFF celupSection">
    <div class="container">
      <div class="row">
        <div id="primary" class="col-md-9 content-area">
          <main id="main" role="main">
            <div class="table-info"><span class="info">테이블번호: 13</span></div>
            <article id="post-445" class="post-content post-445 company type-company status-publish has-post-thumbnail hentry category-32 wpautop">
              <header class="entry-header"><span class="screen-reader-text">할머니잔치국수</span>
                <h1 class="entry-title">할머니잔치국수</h1>
              </header>
              <div class="entry-content">
                <div class="vc_row wpb_row vc_row-fluid">
                  <div class="wpb_column vc_column_container vc_col-sm-12">
                    <div class="vc_column-inner">
                      <div class="wpb_wrapper">
                        <div class="wpb_text_column wpb_content_element">
                          <div class="wpb_wrap