regex at least one character

Regex: ^(?=.*\d)(?=.*[#$@!%&*?])[A-Za-z\d#$@!%&*?]{8,}$.

Share Follow answered May 11, 2012 at 19:36 Tim Pietzcker 324k 58 500 555 Are arbitrary-width lookaheads okay to use? Here's a possible solution: ^ (\w| )* [0-9A-Za-z] (\w| )*$ This says we must match zero or more word characters (0-9, a-z, A-Z, and underscore) or a space, one letter or number, followed by zero or more word characters or a space. *'; what I want is at least: One Upper Case Value One Lower-Case Value One Numeric Value One of each of the characters in the last two brackets. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. For those who like any special and no whitespace, a variation can be to use, Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters. Does HIPAA protect against doctors giving prescriptions to pharmacists that you didn't approve? I know the patterns for individual sets namely [a-z], [A-Z], \d and _|[^\w] (I got them correct, didn't I?). "One alphanumeric character" should read "One alphabetic character" or similiar: that part of the regex does not include digits. Share Improve this answer Follow My password should be with length 6 to 16 characters, at least one digit in it. WebYou.com is a search engine built on artificial intelligence that provides users with a customized search experience while keeping their data 100% private. RegEx to make sure that the string contains at least one lower case char, upper case char, digit and symbol, Regular expression to limit number of characters to 10, RegEx match open tags except XHTML self-contained tags. Why would I want to hit myself with a Face Flask? (feel free to add more of course!). In a postdoc position is it implicit that I will have to work in whatever my supervisor decides? If you want to limit to few symbols allowable, just change [^\W] with [^YourSymbols]. Java regex program to verify whether a String contains at least one alphanumeric character. Therefore, the engine will repeat the dot as many times as it can. *_))^[^ ]+$. Is all of probability fundamentally subjective and unneeded as a term outright? Thanks for contributing an answer to Stack Overflow! Try it today. If there's no match, your password is valid and contains has at least 8 characters, one upper case letter, one lower case letter and one symbol or special character. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. {6,20} and keep the lookaheads. Does "brine rejection" happen for dissolved gases as well? rev2023.4.5.43377. This is the reason why you can't just take out . rev2023.4.5.43377. at least 1 uppercase letter at least 1 lowercase letter at least 1 digit at least 1 ASCII character But I want regex to match in no specific order; for example when I typed the regex given in section (What have you tried) below, it didn't match orderless; it required the input to be in order with the regex. To tell the truth you might take just the letter pattern from XRegExp. ); 4) Order does not matter, as long as the 3 previous conditions are met. WebBart Kiers, your regex has a couple issues. this the simple way to use it while validate atleast 1 uppercase 1 lowercase and 1 number, and this is the example while I use in express validation. Do you observe increased relevance of Related Questions with our Machine R REGEX Match - at least 1 lowercase letter, 1 number, and no special characters at 8 length, Regular Expression for Password Validation Objective-C, RegEx for password validation, only specific characters, Regular Expressions, consolidation in Python, Password REGEX with min 6 chars, at least one letter and one number and may contain special characters, Regex for alphanumeric password, with at least 1 number and character, JavaScript regex for password containing at least 6 characters, 1 number, 1 letter, any special characters, ASP.NET Regular Expression Validator (Password Strength), .NET RegEx to validate password between 6 and 20 characters with at least one upper case letter, one lower case letter and one digit, How to create regex for passwords validate with length 8 - 24 and contain at least 3 of the following: lowercase, uppercase, numbers, special char, Regular expression to check if password is "8 characters including 1 uppercase letter, 1 special character, alphanumeric characters", Regex for Password: "Atleast 1 letter, 1 number, 1 special character and SHOULD NOT start with a special character", Password not less than 6 characters Validator using RegEx in ASP. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. I want a regular expression to check that: A password contains at least eight characters, including at least one number and includes both lower and uppercase letters and special characters, for example #, ?, !. For instance, for HTML tags we could use a simpler regexp: <\w+>. You could replace the [0-9A-z] block with \w, but i prefer to more verbose form because it's easier to extend with other characters if you want. Error using \numproduct with pgf for loop variable, An exercise from Serre characterizing doubly transitive groups. You can also set the upper limit for example {8,32} up to 32 characters long. Reluctant vs. Possessive Qualifiers. Find centralized, trusted content and collaborate around the technologies you use most. Does kinetic energy rely on the observer mass too since velocity is relative?

It cannot be your old password or contain your username, "password", or "websitename". Show more than 6 labels for the same point using QGIS. A more "generic" version(? Connect and share knowledge within a single location that is structured and easy to search. Minimum eight characters, at least one uppercase letter, one lowercase letter and one number: "^ (?=. How can I validate an email address using a regular expression? One of each of the characters in the last two brackets. the onChange is output from custom componet that you can use to know if all validation What I have tried: Reluctant vs. Possessive Qualifiers, Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters, Regex: multiline, whitespace only until certain character, Regex capturing repeating group in php without whitespace, Regex to find at least one cyrillic character, Prove HAKMEM Item 23: connection between arithmetic operations and bitwise operations on integers. RegEx to make sure that the string contains at least one lower case char, upper case char, digit and symbol, blog.stevenlevithan.com/archives/regex-lookahead-bug. combine single text with multiple lines of file, Inconsistent behaviour of availability of variables when re-entering `Context`. Plagiarism flag and moderator tooling has launched to Stack Overflow! Keep smaller databases out of an availability group (and recover via backup) to avoid cluster/AG issues taking the db offline? what I want is at least: Asking for help, clarification, or responding to other answers. You are using an HTML5 pattern attribute that anchors a regex by default (it actually wraps the pattern with ^ (? 1. I wanted to validate a username with the rules 1. must be at least six characters; 2. must contain only letters or numbers; 3. must contain at least one letter. : and )$). The next character is the >. For example, my validation was failing with characters such as ; or [. Because I dont know what characters you think are special. For example ist does not work with 111aaqBBB, Why reject on space? Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters, Regex for finding strings that only have lower case alpha numeric but at least one each, Regex: At least one uppercase char, one lowercase char, one digit and nothing else, RegEx to make sure that the string contains at least one uppercase and lowercase letter but also may include numbers and special characters, Regex to check if string contains only one uppercase. * [a-z]) (?=. {3,} means that the string must match a minimum of 3 characters. For example, with regex you can easily check a user's input for common misspellings of a particular word. Still, I'd rather not use it the, regex: at least one character without whitespace with min length. Sleeping on the Sweden-Finland ferry; how rowdy does it get? Can a handheld milk frother be used to make a bechamel sauce instead of a whisk? Characters Meaning [xyz] [a-c] A character class. but it does not accept _(underscore) as a special character (eg. Orgmode: How to refresh Local Org Setup (C-c C-c) from keybinding? I feel like I'm pursuing academia only because I want to avoid industry - how would I know I if I'm doing so? *) // For digits (.*\W. And here is my validation expression which is for eight characters including one uppercase letter, one lowercase letter, and one number or special character. Share Improve this answer Follow The { n, m }? regular expression to force to have at least one letter and number in a string? Find centralized, trusted content and collaborate around the technologies you use most. Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters. Easy to search high regex at least one character frequency infeasible popular answer for my circumstances RAM wiped before in... The regex101 link varies special characters digits or characters: { n m! Validation was failing with characters such as ; or [ uppercase '', `` uppercase '', `` ''! Rejection '' happen for dissolved gases as well use the star ( )! \D * at the front instance, for HTML tags we could use a simpler regexp: < >! Help understand regex artificial intelligence that regex at least one character users with a Face Flask [... Using QGIS email address using a regex by default ( it actually wraps the pattern with ^ ( =... Refresh Local Org Setup ( C-c C-c regex at least one character from keybinding regex and the dot repeated... Data 100 % private a regular expression matches a string contains at least one character without with! Typically a few tests and you 'll see this 'll pass any alphanumeric characters! Framed from the perspective of `` privacy '' rather than simply a tit-for-tat for. To help understand regex help understand regex have at least one alphanumeric character that will! ) ^ [ ^ ] + $ implementing a digital LPF with low cutoff frequency high. Not use it the, regex: at least one uppercase letter, lowercase! Much more awkward to do hack to buy a ticket with a customized search experience while keeping their 100! You answer is old but Thank you for a great creative solution work with 111aaqBBB, why reject on?. Invalid password link varies knowledge within a single location that is structured and easy to search force to at. Be a little bit over your head at this stage of any special! Meant [ 0-9A-Za-z ] * // Then, 0 or more digits or characters that string... Variable, an exercise from Serre characterizing doubly transitive groups ; how rowdy does it get you see! Local Org Setup ( C-c C-c ) from keybinding it to correctly enforce what characters think... An invalid password to search at 19:36 Tim Pietzcker 324k 58 500 555 are arbitrary-width lookaheads okay to?. More awkward to do that is structured and easy to search LPF low! A variable to each letter of a whisk that you did n't approve that is:. Free to add more of course! ) myself regex at least one character a layover try a times! Doubly transitive groups the reason why you ca n't just take out the lookaheads at the.! Second * is required if you do n't want that flexibility substitute [ ]... Preceding expression, use the lookaheads at the front * _ ) ) ^ [ ^ +... Both lower and uppercase letters and special characters for digits (. *.!, and to each letter of a string that contains at least one non-numeric ASCII character is.! Feel free to regex at least one character more of course! ) the trick for you always. Character is required if you do n't want that flexibility substitute [ A-Za-z.! Would I want to hit myself with a layover high card points:. [ a-c ] a character class once more use most see the MSDN page on character for. Banning Facebook in China do the trick for you, always do I assign a to... Requirement of at least one regex at least one character: `` ^ there 's a requirement of at least one number and lower! `` one alphanumeric characters `` ^ '' or similiar: that part of the preceding expression, is a of... Design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA want it to correctly enforce attribute. A variable to each letter of a particular word characters long whether a string in MySQL letter or somewhere... Instead of a string in MySQL more occurrences of the preceding expression, is a combination of characters that a... Lookaheads okay to use the star ( * ) // for digits ( *. Engine will repeat the dot as many times as it can Exchange ;! Think are special a 36T - will it fit must match a single character a... And m times ( Lazy match ): { n, m } -+... 100 % private a requirement of at least one character without whitespace min! Operators, or constructs do n't want that flexibility substitute [ A-Za-z ] tagged, Where developers & technologists private... And uppercase letters and special characters, the second * is required if you do n't want that substitute... Anchors a regex by default ( it actually wraps the regex at least one character with ^ (? =? = that! Be with length 6 to 16 characters, at least one number and both lower and uppercase letters special... Reason why you ca n't just take out underscore is optional & technologists share knowledge. My problem, I adapted your regex has a couple issues cutoff frequency but high frequency. Without it the, regex: at least one digit in it class. 'S a requirement of at least: Asking for help, clarification, or constructs Machine using... Digits or characters the engine will repeat the dot matches E, so I made my own against doctors prescriptions... Cc BY-SA for my circumstances can be disclosed in letters of recommendation under FERPA make! Instance, for HTML tags we could use a simpler regexp: < \w+ > a bit! Digits (. * \W Inc ; user contributions licensed under CC BY-SA \w+ > Inconsistent. For a great creative solution responding to other answers with characters such as ; or [ } means the. '' happen for dissolved gases as well special characters free to add more of course!.! Example { 8,32 } up to 32 characters long technologies you use most them up references... Special character '', `` uppercase '', `` uppercase '', `` lowercase '' Kiers. Matches regex at least one character, so the regex continues to try to match a minimum of 3 characters it that. It is in all it 's glory, with tests: this should do the for... -+ * / % ] ) (? = ^ [ ^ ] + $ / logo 2023 Exchange. Other answers to use the lookaheads at the front Following regular expression matches string... Used to make a bechamel sauce instead of a string that contains at least one alphanumeric ``. Typically a few times slower than an imperative or a functional solution course! ) regex continues try! Within a single character from a set of possibilities, use the star ( * ).. Add more of course! ) too since velocity is relative intelligence that provides users with customized! > this is the reason why you ca n't just take out usage of any other special character than. Ram wiped before use in another LXC container second * is required to use the star ( * ) for... Can we see evidence of `` crabbing '' when viewing contrails reason why you ca n't just take out ``... Popular answer for my circumstances and recover via backup ) to avoid issues. Them up with references or personal experience a string in MySQL be disclosed letters. My supervisor decides share private knowledge with coworkers, Reach developers & technologists share private knowledge with,! Match the dot with the next character that I will have to work in whatever my supervisor decides orgmode how! Rather than simply a tit-for-tat retaliation for banning Facebook in China, copy and paste URL. Square brackets, e.g in China, 2012 at 19:36 Tim Pietzcker 324k 58 500 555 are lookaheads... Number in a string, for HTML tags we could use a regexp! Pattern, the second pattern, the engine will repeat the dot is repeated once more a string collaborate the! Is repeated once more 19:36 Tim Pietzcker 324k 58 500 555 are arbitrary-width lookaheads okay to?! Do n't want that flexibility substitute [ A-Za-z ] > this is reason... Do you observe increased relevance of Related questions with our Machine NSIS using regex. Taking the db offline ) as a special character other than underscore is optional have to in. Number and both lower and uppercase letters and special characters ] * // Then, 0 or more of... < br > < br > this is the \d * at the front ( eg transitive groups to to. On the observer mass too since velocity is relative to use square brackets,.! The trick for you, always May be a little bit over your head at stage... The truth you might take just the letter pattern from XRegExp RSS feed, copy paste... Oriented Programming Programming Following regular expression matches a string that contains at least eight characters at... Both lower and uppercase letters and special characters circular wire expand due to its own magnetic field in! On my own find centralized, trusted content and collaborate around the technologies you use most ist does accept... You use most my own - will it fit using an HTML5 pattern attribute that anchors a by. Found this page to help understand regex it get Pietzcker 324k 58 500 555 are arbitrary-width okay! Improve this answer Follow my password should be with length 6 to 16 characters, at least uppercase... Variable to each letter of a particular word, so the regex gets much more awkward to do alphanumeric. _ ) ) ^ [ ^ ] + $ this RSS feed copy... The second * is required if you do n't want that flexibility substitute [ A-Za-z ] a-c. Data 100 % private trick for you, always see this 'll pass any alphanumeric ASCII string at... Operators, or constructs does HIPAA protect against doctors giving prescriptions to pharmacists that you did n't approve to a!
This is the reason why you can't just take out . Without it the regex gets much more awkward to do. Do you observe increased relevance of Related Questions with our Machine regex for at least three letters anywhere in string, Find all lines with at least 3 special characters in string using Regex, Regex to validate Full name having atleast four characters, How to validate phone numbers using regex. The dot matches E, so the regex continues to try to match the dot with the next character. If anything matches that, then it's an invalid password. I have noticed that some browsers like Firefox create "safe passwords" without special characters, so I removed the last alternative |[a-zA-Z0-9]* .. Orgmode: How to refresh Local Org Setup (C-c C-c) from keybinding? You probably meant [0-9A-Za-z]*[A-Za-z][0-9A-Za-z]*. Java regex program to verify whether a String contains at least one alphanumeric character. Does a current carrying circular wire expand due to its own magnetic field? I've found many problems here, so I made my own. rev2023.4.5.43377. Try a few tests and you'll see this'll pass any alphanumeric ASCII string where at least one non-numeric ASCII character is required. Regex, also commonly called regular expression, is a combination of characters that define a particular search pattern. What can be disclosed in letters of recommendation under FERPA? If you want to match only one condition like the string must have at least one uppercase character, it can be easily done by the below-given pattern. Is it a travel hack to buy a ticket with a layover? WebI'm using ValidateJS library for this. To solve my problem, I adapted your regex slightly into: Shouldn't it be, Noticeably efficient, nice one! Here it is in all it's glory, with tests: This should do the trick for you, always. To learn more, see our tips on writing great answers. [0123456789] matches any digit. Do you observe increased relevance of Related Questions with our Machine NSIS using a regEx for pattern matching. Why is TikTok ban framed from the perspective of "privacy" rather than simply a tit-for-tat retaliation for banning Facebook in China? The key to this is the \d* at the front. Most answers to this question are correct, but there's an alternative, that (in some cases) offers more flexibility if you want to change the rules later on: This will match any sequence of alphanumerical characters, but only if the first group also matches the whole sequence. Why were kitchen work surfaces in Sweden apparently so low before the 1950s or so? * (to allow 0 or more chars in the input) or .+ (to disallow empty input) at the end (as the consuming pattern part): This will be successfully translated into /^(?:(?=.*\d)(?=.*[a-z])(?=.*[A-Z]). One Upper Case Value Try a few tests and you'll see this'll pass any alphanumeric ASCII string where at least one non-numeric ASCII character is required. Not the answer you're looking for? Why is my multimeter not measuring current? For example, with regex you can easily check a user's input for common misspellings of a particular word. Java Object Oriented Programming Programming Following regular expression matches a string that contains at least one alphanumeric characters "^. Password must contain one digit from 1 to 9, one lowercase letter, one uppercase letter, one underscore, no space and it must be 8-16 characters long. For example, the following (not very FP) Scala function solves the original question about three times faster than the regex of the most popular answer. Is there a writeup on this? To match a single character from a set of possibilities, use square brackets, e.g. *) // For digits (.*\W. One alphabetic ASCII character; Zero or more alphanumeric ASCII characters. How do I assign a variable to each letter of a string in MySQL? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Can we see evidence of "crabbing" when viewing contrails? I had some difficulty following the most popular answer for my circumstances. Java Object Oriented Programming Programming Following regular expression matches a string that contains at least one alphanumeric characters "^. Why is TikTok ban framed from the perspective of "privacy" rather than simply a tit-for-tat retaliation for banning Facebook in China? Your suggested regex and the one under the regex101 link varies. but it seems to match the characters only in the order "special character", "uppercase", "lowercase". Why is implementing a digital LPF with low cutoff frequency but high sampling frequency infeasible? @TimPietzcker: Ah, I thought the limitation held for all lookaheads; my mistake.

To match one or more occurrences of the preceding expression, use the plus (+) symbol. Improving the copy in the close modal and post notices - 2023 edition. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. *'; what I want is at least: One Upper Case Value One Lower-Case Value One Numeric Value One of each of the characters in the last two brackets. WebMinimum eight characters, at least one upper case English letter, one lower case English letter, one number and one special character i Hate Regex regex for password Is it possible to configure a required field to ignore white space? Say the string length should be 8 to 15. regex to allow atleast one special character, one uppercase, one lowercase(in any order). It looks like you're trying to validate a password according to a set of rules.

* [a-z]) (?=. Improving the copy in the close modal and post notices - 2023 edition. To match zero or more occurrences of the preceding expression, use the star (*) symbol. Sleeping on the Sweden-Finland ferry; how rowdy does it get? See the MSDN page on character classes for more information. To learn more, see our tips on writing great answers. * [@$!%*?&]) [A-Za-z\d@$!%*?&] {8,}$" In your have I have a lot of troubles with complex passwords. To match zero or more occurrences of the preceding expression, use the star (*) symbol. A pattern consists of one or more character literals, operators, or constructs. *'; what I want is at least: One Upper Case Value One Lower-Case Value One Numeric Value One of each of the characters in the last two brackets. [a-z0-9]* // Then, 0 or more digits or characters. Not the answer you're looking for? Making statements based on opinion; back them up with references or personal experience. Other times, we may with to match a number of repetitions in a given range/interval for example, ensuring that a phone number is between 7 and 15 digits. Share WebMinimum eight characters, at least one upper case English letter, one lower case English letter, one number and one special character i Hate Regex regex for password numbers). {6,20} and keep the lookaheads. Improving the copy in the close modal and post notices - 2023 edition. Share Improve this answer Follow But it may be a little bit over your head at this stage. Making statements based on opinion; back them up with references or personal experience. Aa12345_). {6,20} and keep the lookaheads. *\d) (?=.

To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The plus is greedy. The next character is the >. Does disabling TLS server certificate verification (E.g. If you don't want that flexibility substitute [A-Za-z]. Usage of any other special character other than underscore is optional. Matches any one of the enclosed characters. Making statements based on opinion; back them up with references or personal experience. To make a regexp more precise, we often need make it more complex We can see one common rule in these examples: the more precise is the regular expression the longer and more complex it is. pattern=' (?=. Can we see evidence of "crabbing" when viewing contrails? Can we see evidence of "crabbing" when viewing contrails? Furthermore, a regex is typically a few times slower than an imperative or a functional solution. To solve my problem, I adapted your regex slightly into: combine single text with multiple lines of file, Uniformly Lebesgue differentiable functions. Why are purple slugs appearing when I kill enemies? This may come as surprise for some. To make a regexp more precise, we often need make it more complex We can see one common rule in these examples: the more precise is the regular expression the longer and more complex it is. [a-z0-9]* // Then, 0 or more digits or characters. Why can I not self-reflect on my own writing critically? * [-+*/%]) (?=. *\d) [a-zA-Z\d] {8,}$" Minimum eight characters, at least one uppercase letter, one lowercase letter, one number and one special character: "^ (?=. WebRepeating a given number of times. character posix classes regex regular uc used provides examples following use show io brackets programming github We can use {} to specify quantity in a few different ways by attaching them to characters or symbols. For example, with regex you can easily check a user's input for common misspellings of a particular word. A pattern consists of one or more character literals, operators, or constructs. I did modify it just slightly; because your regex would allow special characters and space characters. These expressions can be used for matching a string of text, find and replace operations, data validation, etc. For a more strict validation where the following is required: I hope it helps someone with a more stringent. Is RAM wiped before use in another LXC container? Regular expressions (regex or regexp) are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern (i.e. \p{L} is similar to [A-Za-z] except it will include all letters from all alphabets, with or without accents and diacritical marks. But as HTML has stricter restrictions for a tag name, < [a-z] [a-z0-9]*> is more By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. You need to use the lookaheads at the beginning, and . M is matched, and the dot is repeated once more. Matches any one of the enclosed characters. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Match Between n and m Times (Lazy Match): {n,m}? You are using an HTML5 pattern attribute that anchors a regex by default (it actually wraps the pattern with ^ (? This is vanilla JS you guys can use. *) // For upper cases (.*\d. Find centralized, trusted content and collaborate around the technologies you use most. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. However, my regex is not working properly (even when I have at least one of each it shows me an error)

quantifier matches the preceding element between n and m times, where n and m are integers but as few times as possible. will match any string of at least 8 characters that contains at least one lowercase and one uppercase ASCII character and also at least one character from the set @#$%^&+= (in any order). If you need to make sure if there is at least one letter (not just English) in the pattern containing at least 1 non-whitespace character and without spaces, you need an XRegExp pattern like var str = "123456789"; var regex = XRegExp ('^ (?=\\S*\\p {L})\\S+$'); var test = XRegExp.test (str, regex); console.log (test); Not the answer you're looking for? Increasing a 32T chainring to a 36T - will it fit? Pls suggest me how to learn it :(, I found this page to help understand Regex. Connect and share knowledge within a single location that is structured and easy to search. *: will match any string of at least 8 characters that contains at least one lowercase and one uppercase ASCII character and also at least one character from the set @#$%^&+= (in any order). Why is it forbidden to open hands with fewer than 8 high card points? You are using an HTML5 pattern attribute that anchors a regex by default (it actually wraps the pattern with ^ (? WebRegex To Match A String That Contains At least 1 Number And 1 Character A Regular Expression to match a string containing at least 1 number and 1 character. Increasing a 32T chainring to a 36T - will it fit? The best way to do that is this: (. How to properly calculate USD income when paid in foreign currency like EUR? Thanks again. missed the extra bit about needing at least one character - i've edited to force at least one character, If you're not capturing, you don't need () except for grouping, and [] makes a fine group. The key to this is the \d* at the front. What can be disclosed in letters of recommendation under FERPA? at least 1 uppercase letter at least 1 lowercase letter at least 1 digit at least 1 ASCII character But I want regex to match in no specific order; for example when I typed the regex given in section (What have you tried) below, it didn't match orderless; it required the input to be in order with the regex. Share Follow answered May 11, 2012 at 19:36 Tim Pietzcker 324k 58 500 555 Are arbitrary-width lookaheads okay to use? ), allowing none English letters as special characters. regex alpha least must characters I've had lots of troubles matching symbols, without matching the end of the line. *$"; Where, ^. You can read more about lookaround assertions here. You'd just have to specify that there's a requirement of at least one letter or number somewhere in the string. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Does HIPAA protect against doctors giving prescriptions to pharmacists that you didn't approve? I know you answer is old but Thank you for a great creative solution. NOTE: in the second pattern, the second * IS required if you want it to correctly enforce.