Editing Regular expression (section)

== Quick Reference Table ==

Note: (1) Blue highlighted areas in samples represent text matching the rules, (2) The same text rule can have multiple representations

{| class="wikitable"
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! Text Rule
! Sample
! Opposite Text Rule
! Sample
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| Any single character (including spaces, but not newline) <br> <code>.</code>
| <span style="background:#C6E3FF">W</span>hat Does the Fox Say? 12 狐狸怎叫 34
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| Any character (including spaces), appears 1 or 0 times <br> <code>.?</code> = <code>.{0,1}</code>
| <span style="background:#C6E3FF">W</span>hat Does the Fox Say? 12 狐狸怎叫 34
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| Any number of multiple characters (including spaces) <br> <code>.*</code> = <code>.{0,}</code>
| <span style="background:#C6E3FF">What Does the Fox Say? 12 狐狸怎叫 34</span>
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| Any number of characters (including spaces), at least 1 occurrence <br> <code>.+</code> = <code>.{1,}</code>
| <span style="background:#C6E3FF">What Does the Fox Say? 12 狐狸怎叫 34</span>
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| Any number of spaces or newlines (at least 1 occurrence) <br> <code>\s+</code>
| What<span style="background:#C6E3FF"> </span>Does the Fox Say? 12 狐狸怎叫 34
| Any number of characters (not including spaces or newlines) <br> <code>[^\s]+</code> = <code>[^\s]{1,}</code> = <code>[\S]+</code> = <code>[^ ]+</code>
| <span style="background:#C6E3FF">What</span> Does the Fox Say? 12 狐狸怎叫 34
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| Any number of ASCII characters (including English, numbers and spaces) <br> <code>[\x00-\x80]+</code> or <code>[[:ascii:]]+</code>
| <span style="background:#C6E3FF">What Does the Fox Say? 12</span> 狐狸怎叫 34
| Non-ASCII, i.e., Chinese characters appearing any number of times <br> <code>[^\x00-\x80]+</code>
| What Does the Fox Say? 12 <span style="background:#C6E3FF">狐狸怎叫</span> 34
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| Any number of uppercase/lowercase English letters, numbers and underscore (_) (not including spaces) <br> <code>[\w]+</code> = <code>[a-zA-Z0-9_]+</code> <br> PHP with <code>u</code> modifier supports Chinese characters
| <span style="background:#C6E3FF">What</span> <span style="background:#C6E3FF">Does</span> <span style="background:#C6E3FF">the</span> <span style="background:#C6E3FF">Fox</span> <span style="background:#C6E3FF">Say</span>? <span style="background:#C6E3FF">12</span> 狐狸怎叫 <span style="background:#C6E3FF">_34</span>
| Any number of characters that are not English letters, numbers and underscore (_) <br> <code>\W+</code> = <code>[^a-zA-Z0-9_]+</code>
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| Any number of digits (not including spaces) <br> <code>[\d]+</code> = <code>[0-9]+</code>
| What Does the Fox Say? <span style="background:#C6E3FF">12</span> 狐狸怎叫 34
| Any number of characters not including digits (including spaces) <br> <code>[^\d]+</code> = <code>[^0-9]+</code> = <code>\D+</code>
| <span style="background:#C6E3FF">What Does the Fox Say? </span>12 狐狸怎叫 34
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| Any number of Chinese characters <br> <code>[\p{Han}]+</code>
| What Does the Fox Say? 12 <span style="background:#C6E3FF">狐狸怎叫</span> 34
| Any number of characters not including Chinese <br> <code>[^\p{Han}]+</code>
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| Lines starting with “狐狸” <br> <code>^狐狸.*$</code>
| <span style="background:#C6E3FF">狐狸怎叫 34 What Does the Fox Say?</span><br>柴犬怎叫 What Does the shiba inu say?
| Lines not starting with “狐狸” <br> <code>^(?!狐狸).*$</code>
| 狐狸怎叫 34 What Does the Fox Say?<br><span style="background:#C6E3FF">柴犬怎叫 What Does the shiba inu say?</span>
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| Lines ending with “怎叫” <br> <code>^.*怎叫$</code>
| What Does the Fox Say? 12 狐狸怎叫 34<br><span style="background:#C6E3FF">What Does the shiba inu say? 柴犬怎叫</span>
| Lines not ending with “怎叫” <br> <code>.*(?&lt;!怎叫)$</code>
| <span style="background:#C6E3FF">What Does the Fox Say? 12 狐狸怎叫 34</span><br>What Does the shiba inu say? 柴犬怎叫
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| Lines containing “狐狸” <br> <code>^.*狐狸.*$</code> or <code>(狐狸)</code>
| <span style="background:#C6E3FF">What Does the Fox Say? 12 狐狸怎叫 34</span><br>What Does the shiba inu say? 柴犬怎叫
| Lines not containing “狐狸” <br> <code>^((?!狐狸).)*$</code>
| What Does the Fox Say? 12 狐狸怎叫 34<br><span style="background:#C6E3FF">What Does the shiba inu say? 柴犬怎叫</span>
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| Boolean logic AND: Lines containing both “狐狸” and “叫” <br> <code>(?=.*狐狸)(?=.*叫).*</code> or <code>狐狸.*叫\|叫.*狐狸</code>
| <span style="background:#C6E3FF">What Does the Fox Say? 12 狐狸怎叫 34</span><br><span style="background:#C6E3FF">What Does the Fox Say? 12 不叫狐狸 34</span><br>What Does the shiba inu say? 柴犬怎叫
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| Boolean logic OR: Lines containing “狐狸” or “叫” <br> <code>.*(狐狸\|叫).*</code>
| <span style="background:#C6E3FF">What Does the Fox Say? 12 狐狸怎叫 34<br>What Does the shiba inu say? 柴犬怎叫</span><br>What Does the shiba inu say? 柴犬怎了
| Boolean logic: Lines not containing “狐狸” and not containing “柴犬” <br> <code>^((?!狐狸\|柴犬).)*$</code>
| What Does the Fox Say? 12 狐狸怎叫 34<br>What Does the shiba inu say? 柴犬怎叫<br><span style="background:#C6E3FF">What Does the Husky say? 哈士奇怎叫</span>
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| Boolean logic NOT: Lines not containing “狐狸” but containing “柴犬” <br> <code>^((?!狐狸).)*(柴犬).*$</code> = <code>^(柴犬).*((?!狐狸).)*$</code> = <code>(柴犬).*((?!狐狸).)*</code>
| What Does the Fox Say? 12 狐狸怎叫 34<br><span style="background:#C6E3FF">What Does the shiba inu say? 柴犬怎叫</span>
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