Collation summary based on php common regular expressions
- 2020-06-12 08:38:45
- OfStack
As shown below:
"^/d+$" // Non-negative integers (positive integers + 0 )
"^[0-9]*[1-9][0-9]*$" // Positive integer
"^((-/d+)|(0+))$" // Nonpositive integers (negative integers) + 0 )
"^-[0-9]*[1-9][0-9]*$" // Negative integer
"^-?/d+$" // The integer
"^/d+(/./d+)?$" // Non-negative floating-point Numbers (positive floating-point Numbers) + 0 )
"^(([0-9]+/.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*/.[0-9]+)|([0-9]*[1-9][0-9]*))$" // Are floating point Numbers
"^((-/d+(/./d+)?)|(0+(/.0+)?))$" // Non-positive floating-point Numbers (negative floating-point Numbers) + 0 )
"^(-(([0-9]+/.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*/.[0-9]+)|([0-9]*[1-9][0-9]*)))$" // Negative floating point number
"^(-?/d+)(/./d+)?$" // Floating point Numbers
"^[A-Za-z]+$" // by 26 A string of six English letters
"^[A-Z]+$" // by 26 A string consisting of two uppercase letters
"^[a-z]+$" // by 26 A string of lowercase English letters
"^[A-Za-z0-9]+$" // By the Numbers and 26 A string of six English letters
"^/w+$" // By the Numbers, 26 A string of two English letters or underscores
"^[/w-]+(/.[/w-]+)*@[/w-]+(/.[/w-]+)+$" //email address
"^[a-zA-z]+://(/w+(-/w+)*)(/.(/w+(-/w+)*))*(/?/S*)?$" //url
/^(d{2}|d{4})-((0([1-9]{1}))|(1[1|2]))-(([0-2]([1-9]{1}))|(3[0|1]))$/ // years - month - day
/^((0([1-9]{1}))|(1[1|2]))/(([0-2]([1-9]{1}))|(3[0|1]))/(d{2}|d{4})$/ // month / day / years
"^([w-.]+)@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.)|(([w-]+.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(]?)$" //Emil
/^((/+?[0-9]{2,4}/-[0-9]{3,4}/-)|([0-9]{3,4}/-))?([0-9]{7,8})(/-[0-9]+)?$/ // The phone number
"^(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5])$" //IP address
Regular expressions matching Chinese characters: [/u4e00-/u9fa5]
Matches double-byte characters ( Including Chinese characters ) : [^/x00-/xff]
A regular expression matching an empty line: /n[/s| ]*/r
matching HTML Regular expressions for tags: /<(.*)>.*<///1>|<(.*) //>/
A regular expression matching Spaces at the beginning and end: (^/s*)|(/s*$)
matching Email Regular expression of address: /w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*
Match the url URL Is the regular expression of: ^[a-zA-z]+://(//w+(-//w+)*)(//.(//w+(-//w+)*))*(//?//S*)?$
Match whether the account is valid ( The letter begins, allow 5-16 Byte, allowing alphanumeric underscore ) : ^[a-zA-Z][a-zA-Z0-9_]{4,15}$
Match domestic phone number: (/d{3}-|/d{4}-)?(/d{8}|/d{7})?
Match the tencent QQ No. : ^[1-9]*[1-9][0-9]*$
Metacharacters and their behavior in the context of regular expressions:
/ Will the 1 The characters are marked as 1 A special character, or 1 A literal character, or 1 A backward reference, or 1 a 8 Base escape character.
^ Matches the starting position of the input string. If it's set RegExp The object's Multiline Properties, ^ Also match '/n' or '/r' The position after that.
$ Matches the end of the input string. If it's set RegExp The object's Multiline Properties, $ Also match '/n' or '/r' The previous position.
* Match the previous subexpression zero or more times.
+ Match the previous subexpression 1 Times or times. + Is equivalent to {1,} .
? Match the previous subexpression zero times or 1 Times. ? Is equivalent to {0,1} .
{n} n is 1 Non - negative integers, determined by a match n Times.
{n,} n is 1 Non-negative integers, at least matching n Times.
{n,m} m and n Are non-negative integers, where n <= m . At least match n Secondary and maximum matches m Times. There can be no space between a comma and two Numbers.
? When the character follows any 1 Three other qualifiers (*, +, ?, {n}, {n,}, {n,m}) Later, the matching pattern is non-greedy. The non-greedy pattern matches the searched string as little as possible, while the default greedy pattern matches the searched string as much as possible.
. matches "/n" Any single character other than. To match include '/n' Inside any character, please use the image '[./n]' The model.
(pattern) matching pattern And get it 1 Matching.
(?:pattern) matching pattern But it doesn't get a match, which means that this is 1 Non - retrieve matches, not stored for later use.
(?=pattern) Forward preview in any match pattern Matches the lookup string at the beginning of the string. This is a 1 Six non-fetch matches, that is, the match does not need to be fetched for later use.
(?!pattern) Negative preview, and (?=pattern) opposite
x|y matching x or y .
[xyz] Character set.
[^xyz] A collection of negative characters.
[a-z] Character range that matches any character in the specified range.
[^a-z] A negative character range that matches any character that is not in the specified range.
/b matching 1 The word boundary is the position between the word and the space.
/B Matches non-word boundaries.
/cx Matched by x The specified control character.
/d matching 1 Two numeric characters. Is equivalent to [0-9] .
/D matching 1 Non - numeric characters. Is equivalent to [^0-9] .
/f matching 1 Page break. Is equivalent to /x0c and /cL .
/n matching 1 A newline character. Is equivalent to /x0a and /cJ .
/r matching 1 A carriage return. Is equivalent to /x0d and /cM .
/s Matches any whitespace character, including Spaces, tabs, page breaks, and so on. Is equivalent to [ /f/n/r/t/v] .
/S Matches any non-white space characters. Is equivalent to [^ /f/n/r/t/v] .
/t matching 1 Six tabs. Is equivalent to /x09 and /cI .
/v matching 1 Vertical tabs. Is equivalent to /x0b and /cK .
/w Matches any word character that includes an underscore. Is equivalent to '[A-Za-z0-9_]' .
/W Matches any non-word character. Is equivalent to '[^A-Za-z0-9_]' .
/xn matching n , including n for 106 Base escape value. 106 The base escape value must be two digits long.
/num matching num , including num is 1 Positive integers. A reference to the obtained match.
/n logo 1 a 8 Base escape value or 1 Ten backward references. if /n At least before n Is the obtained subexpression n Is a backward reference. Otherwise, if n for 8 Hexadecimal Numbers (0-7) , n for 1 a 8 Base escape value.
/nm logo 1 a 8 Base escape value or 1 Ten backward references. if /nm At least before is preceded by at least nm Can obtain a subexpression, then nm Is a backward reference. if /nm At least before n Get, then n for 1 Followed by text m Is a backward reference. If none of the previous conditions are met, if n and m Are all 8 Hexadecimal Numbers (0-7) , /nm Will match 8 Base escape value nm .
/nml if n for 8 Hexadecimal Numbers (0-3) And, m and l Are all 8 Hexadecimal Numbers (0-7) , the match 8 Base escape value nml .
/un matching n , including n is 1 with 4 a 106 In base Numbers Unicode Characters.
Regular expressions matching Chinese characters: [u4e00-u9fa5]
Matches double-byte characters ( Including Chinese characters ) : [^x00-xff]
A regular expression matching an empty line: n[s| ]*r
matching HTML Regular expressions for tags: /<(.*)>.*</1>|<(.*) />/
A regular expression matching Spaces at the beginning and end: (^s*)|(s*$)
matching Email Regular expression of address: w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*
Match the url URL Is the regular expression of: http://([w-]+.)+[w-]+(/[w- ./?%&=]*)?
Use regular expressions to restrict what can be entered in a text box on a web form:
With regular expression restriction, only Chinese can be entered: onkeyup="value=value.replace(/[^u4E00-u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^u4E00-u9FA5]/g,''))"
Use regular expressions to restrict entry to only full-angle characters: onkeyup="value=value.replace(/[^uFF00-uFFFF]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^uFF00-uFFFF]/g,''))"
Use regular expressions to restrict entry to only Numbers: onkeyup="value=value.replace(/[^d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^d]/g,''))"
Use regular expressions to restrict entry to only Numbers and English: onkeyup="value=value.replace(/[W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^d]/g,''))"
========= Common regular expression
Regular expressions matching Chinese characters: [/u4e00-/u9fa5]
Matches double-byte characters ( Including Chinese characters ) : [^/x00-/xff]
A regular expression matching an empty line: /n[/s| ]*/r
matching HTML Regular expressions for tags: /<(.*)>.*<///1>|<(.*) //>/
A regular expression matching Spaces at the beginning and end: (^/s*)|(/s*$)
matching IP Regular expression of address: /(/d+)/.(/d+)/.(/d+)/.(/d+)/g //
matching Email Regular expression of address: /w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*
Match the url URL Is the regular expression of: http://(/[/w-]+/.)+[/w-]+(/[/w- ./?%&=]*)?
sql Statement: ^(select|drop|delete|create|update|insert).*$
1 , non-negative integers: ^/d+$
2 , positive integers: ^[0-9]*[1-9][0-9]*$
3 , non-positive integers: ^((-/d+)|(0+))$
4 , negative integers: ^-[0-9]*[1-9][0-9]*$
5 , integer: ^-?/d+$
6 , non-negative floating point number: ^/d+(/./d+)?$
7 , positive floating point number: ^((0-9)+/.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*/.[0-9]+)|([0-9]*[1-9][0-9]*))$
8 , non-positive floating point number: ^((-/d+/./d+)?)|(0+(/.0+)?))$
9 , negative floating point number: ^(-(( Regular expressions of positive floating point Numbers )))$
10 , English string: ^[A-Za-z]+$
11 , English capital string: ^[A-Z]+$
12 , English lowercase string: ^[a-z]+$
13 , English characters and Numbers: ^[A-Za-z0-9]+$
14 , English numerals and underscore strings: ^/w+$
15 , E-mail Address: ^[/w-]+(/.[/w-]+)*@[/w-]+(/.[/w-]+)+$
16 , URL : ^[a-zA-Z]+://(/w+(-/w+)*)(/.(/w+(-/w+)*))*(/?/s*)?$
Or: ^http:////[A-Za-z0-9]+/.[A-Za-z0-9]+[//=/?%/-&_~`@[/]/':+!]*([^<>/"/"])*$
17 , Postal code: ^[1-9]/d{5}$
18 And Chinese: ^[/u0391-/uFFE5]+$
19 , Telephone number: ^((/(/d{2,3}/))|(/d{3}/-))?(/(0/d{2,3}/)|0/d{2,3}-)?[1-9]/d{6,7}(/-/d{1,4})?$
20 , Mobile phone Number: ^((/(/d{2,3}/))|(/d{3}/-))?13/d{9}$
21 , double byte characters ( Including Chinese characters ) : ^/x00-/xff
22 , match the first and last Spaces: (^/s*)|(/s*$) (like vbscript That kind of trim Function)
23 , match, HTML Tags: <(.*)>.*<///1>|<(.*) //>
24 , match blank lines: /n[/s| ]*/r
25 , network links extracted from information: (h|H)(r|R)(e|E)(f|F) *= *('|")?(/w|//|//|/.)+('|"| *|>)?
26 , extract the email address in the information: /w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*
27 , link to pictures extracted from information: (s|S)(r|R)(c|C) *= *('|")?(/w|//|//|/.)+('|"| *|>)?
28 , to extract information IP Address: (/d+)/.(/d+)/.(/d+)/.(/d+)
29 , Extract the Chinese mobile phone number in the information: (86)*0*13/d{9}
30 , Chinese fixed telephone number extracted from the information: (/(/d{3,4}/)|/d{3,4}-|/s)?/d{8}
31 , extract the Chinese telephone number in the information (including mobile and fixed telephone) : (/(/d{3,4}/)|/d{3,4}-|/s)?/d{7,14}
32 , The Chinese postal code in the extracted information: [1-9]{1}(/d+){5}
33 , floating-point Numbers (i.e., decimals) in information extraction: (-?/d*)/.?/d+
34 , extract any number in the information : (-?/d*)(/./d+)?
35 , IP : (/d+)/.(/d+)/.(/d+)/.(/d+)
36 Area code: /^0/d{2,3}$/
37 , tencent QQ No. : ^[1-9]*[1-9][0-9]*$
38 , account ( The letter begins, allow 5-16 Byte, allowing alphanumeric underscore ) : ^[a-zA-Z][a-zA-Z0-9_]{4,15}$
39 , Chinese, English, numerals and underscores: ^[/u4e00-/u9fa5_a-zA-Z0-9]+$