Quick reference manual for the strongest collation of common regular expressions (glory Collection Edition)

Catalog

One 、 Check the expression of a number

Two 、 Expression for check character

  3、 ... and 、 Expression of special requirements

3.1. Input format of money

Schedule

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One 、 Check the expression of a number

1. Numbers

   ^[0-9]*$

2. n Digit number

   ^\d{n}$

3. At least n Digit number

   ^\d{n,}$

4. m-n Digit number

   ^\d{m,n}$

5. Zero and non-zero digits

   ^(0|[1-9][0-9]*)$

6. A number with a maximum of two decimal places beginning with a nonzero

   ^([1-9][0-9]*)+(.[0-9]{1,2})?$

7. belt 1-2 Positive or negative number of decimal places

   ^(\-)?\d+(\.\d{1,2})?$

8. Positive numbers 、 negative 、 And decimal fraction

   ^(\-|\+)?\d+(\.\d+)?$

9. A positive real number with two decimal places

   ^[0-9]+(.[0-9]{2})?$

10. Yes 1~3 Positive real number of decimal places

    ^[0-9]+(.[0-9]{1,3})?$

11. Nonzero positive integer

    ^[1-9]\d*$  or  ^([1-9][0-9]*){1,3}$  or  ^\+?[1-9][0-9]*$

12. Nonzero negative integer

    ^\-[1-9][]0-9"*$  or  ^-[1-9]\d*$

13. Non-negative integer

    ^\d+$  or  ^[1-9]\d*|0$

14. Non positive integer

    ^-[1-9]\d*|0$  or  ^((-\d+)|(0+))$

15. Nonnegative floating point number

    ^\d+(\.\d+)?$  or  ^[1-9]\d*\.\d*|0\.\d*[1-9]\d*|0?\.0+|0$

16. Non positive floating point number

    ^((-\d+(\.\d+)?)|(0+(\.0+)?))$  or  ^(-([1-9]\d*\.\d*|0\.\d*[1-9]\d*))|0?\.0+|0$

17. Positive floating point

    ^[1-9]\d*\.\d*|0\.\d*[1-9]\d*$ 
     or  
    ^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$

18. Negative floating point number

    ^-([1-9]\d*\.\d*|0\.\d*[1-9]\d*)$ 
     or  
    ^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$

19. Floating point numbers

    ^(-?\d+)(\.\d+)?$ 
     or  
    ^-?([1-9]\d*\.\d*|0\.\d*[1-9]\d*|0?\.0+|0)$

    Two 、 Expression for check character

1. Chinese characters

   ^[\u4e00-\u9fa5]{0,}$

2. English and numbers

   ^[A-Za-z0-9]+$  or  ^[A-Za-z0-9]{4,40}$

3. The length is 3-20 All characters of

   ^.{3,20}$

4. from 26 A string of English letters

   ^[A-Za-z]+$

5. from 26 A string of uppercase letters

   ^[A-Z]+$

6. from 26 A string of lowercase letters

   ^[a-z]+$

7. By numbers and 26 A string of English letters

   ^[A-Za-z0-9]+$

8. By digital 、26 A string of English letters or underscores

   ^\w+$  or  ^\w{3,20}

9. chinese 、 english 、 Numbers include underscores

   ^[\u4E00-\u9FA5A-Za-z0-9_]+$

10. chinese 、 english 、 Number but excluding symbols such as underscores

    ^[\u4E00-\u9FA5A-Za-z0-9]+$  or  ^[\u4E00-\u9FA5A-Za-z0-9]{2,20}$

11. Can be entered with ^%&',;=?$\" Equal character

    [^%&',;=?$\x22]+

12. Disable input containing ~ The characters of

    [^~\x22]+

    Other ：

    .* Matching elimination  \n  Any character other than .

    /[\u4E00-\u9FA5]/  Chinese characters

    /[\uFF00-\uFFFF]/  Full angle symbol

    /[\u0000-\u00FF]/  Half angle symbol

  3、 ... and 、 Expression of special requirements

 

1. Email Address

   ^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$

2. domain name

   [a-zA-Z0-9][-a-zA-Z0-9]{0,62}(/.[a-zA-Z0-9][-a-zA-Z0-9]{0,62})+/.?

3. InternetURL

   [a-zA-z]+://[^\s]* 
    or  
   ^http://([\w-]+\.)+[\w-]+(/[\w-./?%&=]*)?$

4. Phone number

   ^(13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$

5. Phone number

   ("XXX-XXXXXXX"、"XXXX-XXXXXXXX"、"XXX-XXXXXXX"、"XXX-XXXXXXXX"、"XXXXXXX" and "XXXXXXXX)：
   
   ^(\(\d{3,4}-)|\d{3.4}-)?\d{7,8}$

6. Domestic phone number

   (0511-4405222、021-87888822)：\d{3}-\d{8}|\d{4}-\d{7}

7. ID number (15 position 、18 Digit number )

   ^\d{15}|\d{18}$

8. Short ID number ( Numbers 、 Letter x ending )

   ^([0-9]){7,18}(x|X)?$ 
    or  
   ^\d{8,18}|[0-9x]{8,18}|[0-9X]{8,18}?$

9. Is the account number legal ( Beginning of letter , allow 5-16 byte , Allow alphanumeric underscores )

   ^[a-zA-Z][a-zA-Z0-9_]{4,15}$

10. password ( Start with a letter , The length is in 6~18 Between , Can only contain letters 、 Numbers and underscores )

    ^[a-zA-Z]\w{5,17}$

11. Strong password ( Must contain a combination of upper and lower case letters and numbers , Special characters cannot be used , The length is in 8-10 Between )

    ^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,10}$

12. Date format

    ^\d{4}-\d{1,2}-\d{1,2}

13. One year 12 Months (01～09 and 1～12)

    ^(0?[1-9]|1[0-2])$

14. A month 31 God (01～09 and 1～31)

    ^((0?[1-9])|((1|2)[0-9])|30|31)$

 

3.1. Input format of money

1. There are four forms of money we can accept :"10000.00" and "10,000.00", And no " branch " Of "10000" and "10,000"

^[1-9][0-9]*$

2. This means that either of them can't 0 Number at the beginning , however , It also means a character "0" Not through , So we take the following form

^(0|[1-9][0-9]*)$

3. One 0 Or one doesn't 0 Number at the beginning . We can also allow a minus sign at the beginning

^(0|-?[1-9][0-9]*)$

4. This means a 0 Or a start that may be negative is not 0 The number of . Let users 0 The beginning is good. . Remove the minus sign as well , Because money can't be negative . What we're going to add here is the possible decimal part

^[0-9]+(.[0-9]+)?$

5. It must be noted that , There should be at least one after the decimal point 1 digit , therefore "10." No way , however "10" and "10.2" Yes. ：

^[0-9]+(.[0-9]{2})?$

6. In this way, we stipulate that there must be two decimal places after the decimal point , If you think it's too harsh , It can be like this

^[0-9]+(.[0-9]{1,2})?$

7. This allows the user to write only one decimal place . Now it's time to think about commas in numbers , We can do this

^[0-9]{1,3}(,[0-9]{3})*(.[0-9]{1,2})?$

8.1 To 3 A digital , Follow any one comma +3 A digital , Comma as optional , Not necessarily

^([0-9]+|[0-9]{1,3}(,[0-9]{3})*)(.[0-9]{1,2})?$

remarks ： This is the end result , Don't forget + It can be used * Instead, if you think empty strings are acceptable ( strange , Why? ?) Last , Don't forget to remove the backslash when using functions , Common mistakes are here

1. xml file

   ^([a-zA-Z]+-?)+[a-zA-Z0-9]+\\.[x|X][m|M][l|L]$

2. Regular expression of Chinese characters

   [\u4e00-\u9fa5]

3. Double byte character

   [^\x00-\xff] ( Including Chinese characters , Can be used to calculate the length of a string ( A double byte character length meter 2,ASCII Character meter 1))

4. Regular expression for blank lines

   \n\s*\r ( Can be used to delete blank lines )

5. HTML Tagged regular expression

   <(\S*?)[^>]*>.*?</\1>|<.*? /> 
   ( The version circulating on the Internet is too bad , This one is only part of it , There's nothing we can do about complex nested tags )

6. Regular expression of first and last whitespace characters

   ^\s*|\s*$ or (^\s*)|(\s*$) 
   ( Can be used to delete blank characters at the beginning and end of a line ( Including Spaces 、 tabs 、 Page breaks and so on ), Very useful expressions )

7. tencent QQ Number

   [1-9][0-9]{4,} ( tencent QQ Number from 10000 Start )

8. China Post Code

   [1-9]\d{5}(?!\d) ( China Post code is 6 Digit number )

9. IP Address

   \d+\.\d+\.\d+\.\d+ ( extract IP Useful for addresses )

10. IP Address

    ((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))

11. IP-v4 Address

    \\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\b ( extract IP Useful for addresses )

12. check IP-v6 Address

    (([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:)
    {1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:)
    {1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]
    {1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-
    fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:)
    {0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}
    [0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))
    （ It's too complicated , The mentality is about to collapse ...）
    

13. Subnet mask

    ((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))

14. Verification date

    ^(?:(?!0000)[0-9]{4}-(?:(?:0[1-9]|1[0-2])-(?:0[1-9]|1[0-9]|2[0-8])|(?:0[13-9]|1[0-2])-(?:29|30)|(?:0[13578]|1[02])-31)|(?:[0-9]{2}(?:0[48]|[2468][048]|[13579][26])|(?:0[48]|[2468][048]|[13579][26])00)-02-29)$(“yyyy-mm-dd“  Format date verification , A flat leap year has been considered .)

15. Extract comments

    <!--(.*?)-->

16. lookup CSS attribute

    ^\\s*[a-zA-Z\\-]+\\s*[:]{1}\\s[a-zA-Z0-9\\s.#]+[;]{1}

17. Extract page hyperlinks

    (<a\\s*(?!.*\\brel=)[^>]*)(href="https?:\\/\\/)((?!(?:(?:www\\.)?'.implode('|(?:www\\.)?', $follow_list).'))[^" rel="external nofollow" ]+)"((?!.*\\brel=)[^>]*)(?:[^>]*)>

18. Take pictures of web pages

    \\< *[img][^\\\\>]*[src] *= *[\\"\\']{0,1}([^\\"\\'\\ >]*)

19. Extract web page color code

    ^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$

20. File extension validation

    ^([a-zA-Z]\\:|\\\\)\\\\([^\\\\]+\\\\)*[^\\/:*?"<>|]+\\.txt(l)?$

21. Judge IE edition

    ^.*MSIE [5-8](?:\\.[0-9]+)?(?!.*Trident\\/[5-9]\\.0).*$

Schedule :（ I really can't knock , Lazy on the picture ）

 

 

 

 

 

 

Only when you start , You will reach your ideal and destination , Only when you work hard ,
You will achieve brilliant success , Only when you sow , You will gain something . Only pursue ,
To taste the taste of success , Sticking to yesterday is called foothold , Sticking to today is called enterprising , Sticking to tomorrow is called success . Welcome all friends to praise + Collection ！！！