Learning notes for common regular expression matching in php

Refer to the N + 1 Regular expression summary:

Common regular expression matching:

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(11 | 12 | 13 | 14 | 15 | 21 | 22 | 23 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 41 | 42 | 43 | 44 | 45 | 46 | 50 | 51 | 52 | 53 | 54 | 61 | 62 | 63 | 64 | 65) [0-9] {4 }) ([1 | 2] [0-9] {3} [0 | 1] [0-9] [0-3] [0-9] [0-9] {3} [X0-9]) | ([0-9] {2} [0 | 1] [0-9] [0-3] [0-9] [0-9] {3 }))

Match Tencent QQ number: [1-9] [0-9] {4,} Note: Tencent QQ number starts from 10000
Price:/(^ [-+]? [1-9] d * (. d {1, 2 })? $) | (^ [-+]? [0] {1} (. d {1, 2 })? $ )/
Verify user password: "^ [a-zA-Z] w {5, 17} $" correct format: start with a letter, Length: 6 ~ It can only contain characters, numbers, and underscores.
China Postal code: [1-9] {1} (d +) {5}
China mobile phone number: (86) * 0 * 13d {9}

Mask:

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/^ (254 | 252 | 248 | 240 | 224 | 192 | 128 | 0 ). 0.0.0 $ | ^ (255. (254 | 252 | 248 | 240 | 224 | 192 | 128 | 0 ). 0.0) $ | ^ (255.255. (254 | 252 | 248 | 240 | 224 | 192 | 128 | 0 ). 0) $ | ^ (255.255.255. (254 | 252 | 248 | 240 | 224 | 192 | 128 | 0 | 255) $/

Chinese phone number (including mobile phone and landline phone) :( (d {3, 4}) | d {3, 4}-| s )? D {7, 14}
Regular Expression "(d {3, 4}) | d {3, 4 }-)? D {0511} (-d {3}) * "(matching format: 4405222-87888822, 021-44055520, 021-555-0511, or (4405222)

China ID number:

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(11 | 12 | 13 | 14 | 15 | 21 | 22 | 23 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 41 | 42 | 43 | 44 | 45 | 46 | 50 | 51 | 52 | 53 | 54 | 61 | 62 | 63 | 64 | 65) [0-9] {4 }) ([1 | 2] [0-9] {3} [0 | 1] [0-9] [0-3] [0-9] [0-9] {3} [X0-9]) | ([0-9] {2} [0 | 1] [0-9] [0-3] [0-9] [0-9] {3 }))

Matching space/blank line:

Regular expression for matching empty rows: n [s |] * r
Regular expression matching the first and last Spaces: (^ s *) | (s * $)
Regular Expression Matching Chinese characters: [u4e00-u9fa5]

Matching number:

Only numbers can be entered: "^ [0-9] * $"
Integer or decimal number: ^ [0-9] +. {} [0-9] {} $
You can only enter at least n digits: "^ d {n,} $ ".
Only m ~ can be input ~ N-digit :. "^ D {m, n} $"
Only numbers starting with zero and non-zero can be entered: "^ (0 | [1-9] [0-9] *) $"
Only positive numbers with two decimal places can be entered: "^ [0-9] + (. [0-9] {2 })? $"
Only 1 ~ Positive number of three decimal places: "^ [0-9] + (. [0-9] {1, 3 })? $"
Only a non-zero positive integer can be entered: "^ +? [1-9] [0-9] * $"
Only a non-zero negative integer can be entered: "^-[1-9] [] 0-9" * $
Only 3 characters can be entered: "^. {3} $"

Matching letter:
Only A string consisting of 26 English letters can be entered: "^ [A-Za-z] + $"
Only a string consisting of 26 uppercase letters can be entered: "^ [A-Z] + $"
You can only enter a string consisting of 26 lower-case English letters: "^ [a-z] + $"
Only strings consisting of digits and 26 English letters can be entered: "^ [A-Za-z0-9] + $"
Only a string consisting of digits, 26 English letters, or underscores can be entered: "^ w + $"
Check whether ^ % & ',; =? $ "And other characters:" [^ % & ',; =? $ X22] +"

The following is an example of your own regular expression application.

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Function pregt( $ test ){ /** Phone number matching Telephone number rules: Area Code: 3 to 5 digits, mostly four digits, Beijing (010) and Shanghai (021). Tibet has five digits, which can be wrapped in brackets or not. If the area code is enclosed by parentheses, there can be 0 to 1 space between the area code and the number. If the area code is not enclosed by parentheses, there can be two lengths between the area code and the number, or- Number: 7 to 8 digits Example: (010) 12345678 or (010) 12345678 or 010 12345678 or 010--12345678 */ $ Rule = '/^ (010) | (021) | (0d {3, 4 })))(?) ([0-9] {}) | (010 | 021 | 0d }) ([0-9] {7,8}) $/'; Preg_match ($ rule, $ test, $ result ); Return $ result;  }

 

 

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Function pregURL ($ test ){ /** Matching url Url rules: Example Protocol: // domain name (www/tieba/baike...). Name. Suffix/file path/file name Http://www.111cn.net Protocol: // domain name (www/tieba/baike...). Name. Suffix/file path/file name? Parameters Www.www.111cn.net Protocol: // domain name (www/tieba/baike...). Name. Suffix/file path/file name/parameter Http://www.111cn.net      Protocol: dispensable, consisting of uppercase and lowercase letters. If the protocol is not written, it should not exist: //; otherwise, it must exist :// Domain name: must exist, consisting of uppercase and lowercase letters Name: it must exist. It must contain letters, numbers, and Chinese characters. Suffix: must exist, consisting of uppercase and lowercase letters and. File path: optional, consisting of uppercase and lowercase letters and numbers File name: optional, consisting of uppercase and lowercase letters and numbers Parameter: optional? Start? Parameters must start */ $ Rule = '/^ ([a-zA-Z] + )(://))? ([A-zA-Z] +). (w +). ([w.] +) (/([w] + )/?) * (/[A-zA-Z0-9] +. (w +) * (/([w] + )/?) *(? (W + =? [W] *) * (&? W + =? [W] *) * $ /'; Preg_match ($ rule, $ test, $ result ); Return $ result;  }

 

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Function pregPOS ($ test ){ /** Matching zip code Rule: six digits. The first digit cannot be 0. */ $ Rule = '/^ [1-9] d {5} $ /'; Preg_match ($ rule, $ test, $ result ); Return $ result;  }

 

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Function pregCh ($ test ){ // Match Chinese characters in utf8 $ Rule = '/([x {4e00}-x {9fa5}]) {1}/U '; Preg_match_all ($ rule, $ test, $ result ); Return $ result;  }

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Function pregTI ($ test ){ /** Matching time Rules: The format can be: Year-month-day hour: minute: Second Year-month-day hour: minute Year-Month-Day Year: four digits starting with 1 or 2 Month: the number of 1-9 digits; the number of two digits starting with 0 or 1. The number of digits starting with 0 is the number of one to nine digits, and the number of digits starting with 1 is the number of one to two digits. Day: number of 1-9 digits; two digits starting with 0 or 1 or 2 or 3. The number of digits starting with 0 is one to nine digits, the number of digits starting with 1 or 2 is 0 to 9, and the number of digits starting with 3 is 0 or 1. Hour: one digit between 0 and 9; two digits starting with 0 or 1; one digit ranges from 0 to 9; two digits starting with 2, and one digit ranges from 0 to 3. Minute: one digit from 0 to 9; two digits starting with 0 to 5; one digit is from 0 to 9; Minute: one digit from 0 to 9; two digits starting with 0 to 5. */ $ Rule = '/^ ([1-2] [0-9] {3}-) ([1-9]) | (0 [1-9]) | (1 [0-2])-) ([1-9]) | (0 [1-9]) | ([1-2] [0-9]) | (3 [0-1]) ([0-9]) | ([0-1] [0-9]) | (2 [0-3]) :( ([0-9]) | ([0-5] [0-9]) ([0-9]) | ([0-5] [0-9])? $ /'; Preg_match ($ rule, $ test, $ result ); Return $ result;  }

 

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Function pregIP ($ test ){ /** Matching ip address Rules: ** 1. ** 2. ** 3. ** 4 ** 1 can be 1-9 of a single digit, 01-99 of two digits, 001-255 of three digits ** 2 and ** 3 can be 0-9 of a single digit, 00-99 of two digits, 000-255 of three digits ** 4 can be 1-9 of one digit, 01-99 of two digits, 001-255 of three digits Four parameters must exist */ $ Rule = '/^ ([1-9]) | (0 [1-9]) | ([1-9] [0-9]) | (00 [1-9]) | (0 [1-9] [0-9]) | (1 [0-9] {2 }) | (2 [0-4] [0-9]) | (25 [0-5]).) ([0-9] {1, 2}) | ([0-1] [0-9] {2 }) | (2 [0-4] [0-9]) | (25 [0-5]).) {2} ([1-9]) | (0 [1-9]) | ([1-9] [0-9]) | (00 [1-9]) | (0 [1-9] [0-9]) | (1 [0-9] {2 }) | (2 [0-4] [0-9]) | (25 [0-5]) $ /'; Preg_match ($ rule, $ test, $ result ); Return $ result;  }