Is there any other way of extracting sub-domain & domain from any given URL using a regular expression? What do you mean by hard coding ? You only need to remove the brackets. Dont worry, I know about single and double quotes. Anyway, I now tried these 2 codes which I made-up myself, figuring those is how they should have been: Again, blank page. @Ben I am not sure that ListToArray() will help here. Your regex expression works pretty well. Look at my previous post. characters so I'm assuredly correctly matching the domain name. A domain name comparison has to recognize that it's dealing with a data structure, and to compare correctly. Somente nmeros nacionais What drives the appeal and nostalgia of Margaret Thatcher within UK Conservative Party. Thank my man. Nope. I'm aware of the libraries available for parsing URL. Powered by Discourse, best viewed with JavaScript enabled. This regular expression can be used to verify html (by removing the anchor before pair), as well as extract elements of html (specify elements before the pair). I suppose we could also use ListToArray() and access it that way as well! I think trying to go directly to the HREF value might be overly complicated. Our target substring. I am the co-founder and a principal engineer at InVision App, Inc the world's leading online whiteboard and productivity platform powering the future of work. How do I parse a URL into hostname and path in javascript? Find centralized, trusted content and collaborate around the technologies you use most. Com ou sem DDI 55 (com ou sem + e/ou 00) The simplest way is to create an a element in memory, assign it an href, and then access its hostname and other properties. Ha! xampp or on your website or both? But, here is the issue: I just use the first element from the result array. (You must be signed in to vote). The anchor tags are pulled from everywhere. The information is fetched using a JSONP request, which contains the ad text and a link to the ad image. What is a non-capturing group in regular expressions? (You must be signed in to vote), 1 upvotes, 0 downvotes (100% like it) This code isn't used on the browser side. Nice. Your regex doesn't seem correct. The Internet relies on domain names as a more user-friendly humane address mechanism than IP addresses. You have three sentences that want to be related to each other, but arent in a meaningful way. I don't need libraries. The last thing you want to do is write yet another broken regexp, with all due respect to those that provided answers to your question. what if I want only the domain name without the http(s) or www stuff? Please enable JavaScript to use this web application. For a similar thing, I've gone down the following route: . www.example.com In other words, doesn't rewriting the above loop as so make more sense? This regex is needed to accomodate the new varieties of accessible numbers. Or consider that many sites, like google.com, have lots of subdomains, like drive.google.com or mail.google.com. Why dont second unit directors tend to become full-fledged directors? Can you see, the last few lines look like this: Can you spot what I am doing wrong here ? And, as you can see, we are replacing the entire URL with the value of the captured group - our domain. Come-on, dont tell me you did not understand this: It means, the updated code is only working on xampp. One would possibly encode a more complete match in a more comprehensive regular expression e.g. And if I had to take a wild guess, Id bet that the code you put on your website is more than.

He is especially interested in clean energy technologies like solar power, wind power, and electric cars. Of-course a check is required to make sure list has at-least 2 item. Another package popped up in a broader search: It's curious why domain-match is so thinly used, and why aren't there more packages of this sort? Best not to shift direction towards radio now. Your only recourse is to process it with javascript on the response page you build. There are many well documented libraries and approaches to handling this. Provided $url was actually being set and sent to the function, quotes were not required, as it was a variable and would be interpretted as a string already. If we create an instance of the Java URL class and initialize it with our target URL, it will parse the URL internally and give use access to the URL components: Notice that all we have to do is create the URL instance and pass in our referer URL.

and publishers earn cpa income from the visits. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. List usage is definitely an easy and straightforward way to go! There is no one set place that I pull them from. Domain names are case insensitive, FWIW. For example, in Correctly match URL against domain name without killing yourself with regular expressions, https://www.npmjs.com/package/domain-match, https://www.npmjs.com/package/url-pattern, https://www.npmjs.com/package/domain-matcher, https://www.npmjs.com/package/wildcard-domain-matcher, Simplify catching uncaughtException, unhandledRejection, and multipleResolves in Node.js. And, when we run this code, we get the following output: Part: http:// Part: www.shemuscle.com Part: /category/anonymous/. You're on a slippery slope into regular expression hell, and perhaps it's necessary to take a step back and consider the situation. Who is your host? As such, we could grab the domain name by using a positive look behind on the protocol. See http://tutorialzine.com/2013/07/quick-tip-parse-urls/. I missed the quotes on the first mention of google.com. But, did I prevent it from matching a domain of iloveamazon.com? These are examples of why I'm insisting you must treat a domain name as a data structure, rather than as a simple string. Then, all we have to do is ask it of for the domain name (host) of the given URL. The same RegExp as in anubhava's answer, only added support for protocol-relative URLs like //google.com: Here's a solution ignoring everything before ://. Great, good luck re-inventing the wheel and maintaining your broken regexps over the coming years. [-+ ]?[178]? In production systems, the hardware elements (routers, etc) will often be named with deeply nested domain names reflecting the geographical location and other identifiers. I see this result on xampp (Dont advise about the br tags. /^amazon\.com$|. Missed you old buddy! DDD obrigatrio (com ou sem parnteses) Have you checked their control panel for where their Access/Error logs may be stored? Get smarter at building your thing. But, I also need to ignore the "www." Story: man purchases plantation on planet, finds 'unstoppable' infestation, uses science, electrolyses water for oxygen, 1970s-1980s. A common task is matching a domain name or a URL to see if it's associated with a specific domain name. I'm not able to understand why "play." Yes, when my code doesnt work, I start experimenting. How APIs can take the pain out of legacy system headaches (Ep. Because regular expressions are evaluated from left to right in a greedy fashion, we can have our regular expression pattern match parts of the domain moving from left to right; first, we'll match the protocol, then the domain name, then the rest of the string: Notice in this code that our regular expression matches the three crucial parts of the domain. Check out the license. If you wish to know why, or how single or double quotes behave differently in PHP, I strongly recommend you borrow or buy a book and read it. Hence, you see a sudden shift in direction. Share cookie between subdomain and domain. Note: regex is faster than language built-in modules. For example you want to match amazon.com and www.amazon.com and any other subdomain of amazon.com. =regexreplace(B20;"ua(\/)";"ua\/ua\/"), Password, 8 chars, at least one special char, As more and more nigerians get new phone numbers daily, the main telcom companies in Nigerian increase the varieties of numbers to accomodate this greater demand. Try: Does "/p" and "/t" have any meaning for the regular expression evaluator? The test of whether a domain name is a subdomain of another is not a simple case-less string comparison. Hence, you see a sudden shift in direction. Im already swimming in too many ideas which I want to bring to life with php. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Yes, when my code doesnt work, I start experimenting. I just converted the whole page into arrays that are delimted by this, I then delimted that array by a " so I can call on each URL pretty easily. rev2022.7.21.42639. Com ou sem Dgito 9 0 upvotes, 0 downvotes (0% like it) Imagine a website where people listen to radio and the sound publishers earn money. Announcing the Stacks Editor Beta release! I generally just do: ListGetAt(referer,2,'/'). Actually, I was about to go out and found this link: https://stackoverflow.com/questions/3442333/php-regex-get-domain-from-url. serve? techsparx.com sure looks like a string, and we store it as a string in software. The scenario which I'm facing is, I can't go on write javascript code. Hi Ben Nadel, I want to use regex code to extract only domain name for http referrers, can you please give me clue? But more importantly, it does domain name matching the way it's supposed to be done. Thanks! The question is where to get the domainMatch function. It knows a set of Amazon domains, and uses the regular expression to match against the hostname portion of the URL. I also found the following code but it is not working: $domain = parse_url(http:// . I wish I could do it client side that would save a lot of resources but at any rate I have figured it out. The anchor value is. One method will use the REReplace() function and one method will use the REMatch() function (only available in ColdFusion 8 or later). I know I am doing something wrong and so go easy on the crticisms! Wouldn't a match expression like *.amazon.com make more sense? Get the domain name from a link using regex. Since reaching down into the Java layer is probably overkill for such a use case, I will instead explore two different methods to use the POSIX regex engine to get what we need. That looks like an intense UDF. Could anyone please help me in this regard? Note the last one has single quote while the other 2 double. Well, if we use the Java class, java.net.URL, we can offload that heavy lifting. I tried the following approx. Ha! Just mentioned it, incase anyone wants to develope the idea. Fixed that and it is working. The JSON file and images are fetched from buysellads.com or buysellads.net.

Can anyone Identify the make, model and year of this car? I also rock out in JavaScript and ColdFusion 24x7 and I dream about chained Promises resolving asynchronously. $('a').each(function(){alert($(this).attr('href'))}); Actually it does need to be done server side. In other words, you don't even have to parse the URL, the domainMatch function does it for you. For example, pages that have sample code on it would have href tags that are not true HREF tags. As a final method, let's quickly explore the Java URL object. I did a few extra things to correct this issue. But what happens if you only upload the above in a script to your website? Cpa income. I always tend to shy away from reg ex's due to never quite "getting" them. $url = "http://google.com"; And, when we run this code, we get the following output: If you are using ColdFusion 8, you can use the REMatch() function to gather all matches in a given string. Great article by @BenNadel - Ask Ben: Getting The Domain Name From The Referer URL, Ben Nadel 2022. It is used in node.js. Yes, node.js has "url" module which can be used. Mount 29'' wheels on Cube Reaction TM 2018. Versions: 7.3.5, 7.2.18, 7.2.4, 7.1.29, 7.1.0, 7.0.14, 7.0.5, 7.0.4, 7.0.3, 7.0.2, 7.0.1, 5.6.29, 5.6.20, 5.6.19, 5.6.18, 5.6.17, 5.6.2, 5.5.34, 5.5.33, 5.5.32, 5.5.31, 5.5.18, 5.5.5, Yeah. While I'm sure the predominant technique for matching domain names is regular expressions, they aren't a good mechanism for matching domain names. The natural way to describe any subdomain of example.com is with the pattern match *.example.com, but where do we get a suitable matching algorithm?

How can I do that? US to Canada by car with an enhanced driver's license, no passport? How do you use a variable in a regular expression? In other words, it is a constant sort of thingy . http://www.example.com One, the External Links plugin, looks for tags for outbound links, and will add rel=nofollow or other attributes depending on the domain. How can I drop the voltage of a 5V DC power supply from 5.5V to 5.1V? By the way, what do you mean by "can't go on write javascript code"? It would be really easy with jQuery on the client side. But sometimes, we can offload the processing of strings to existing pieces of functionality like the Java URL class, and get what we need without any of the complexity associated with regular expressions. This post just saved me a few minutes years after the fact. I see SpaceShipTrooper LIKED your question. Is there a regular expression to detect a valid regular expression? However, the regular expression engine that ColdFusion uses (POSIX) does not allow for look behinds. Try this regex: You are about the one millionth person to try to parse URLs in JavaScript. Normally, when we think about the domain name of a URL (which is what the CGI.http_referer value is), we think of the domain name as the part of the URL that comes after the protocol (http://, https://, ftp://, etc.). Which means you likely compounded your other problems into this one. But I dont give much time to the manual because the complicated codes put me off from php. I know how to get the actual anchor text but not the href value. Thanks for the suggestion, though. I'm just trying to get a sense of what your use-case fully is. http://example.com We can use this function to match parts of the target URL and then pluck the domain name out of the returned matches. Your code started with $url instead of a hard-coded value. I mean, I can't send the javascript code as argument. When you do that, you just have to be careful if the page has any instances of "href=" that are not part of actual HREF tags. https://example.com Regular expression are a great tool in the programming toolbox; and, they are amazing for string parsing. Google it. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. doesn't work. Regular Expression for alphanumeric and underscores, Regular expression to match a line that doesn't contain a word. And, when we run the above code, we get the following output: Works like a charm and we didn't have to get our hands dirty with any regular expressions. [ ]?\d[ ]?\d[ ]?\d[ ]?\d[ ]?\d[ ]?\d[ ]? Yeah, I totally forgot about using lists :). Have to open a ticket with the webhost about this. While it might not seem intuitive to use a replace function to extract part of a string, if we replace the entire string with the substring that we are seeking, what do we end up with? What version of PHP is your host utilizing? But, unfortunately I can't use it because of the reason stated earlier. Parse error: syntax error, unexpected : in C:\xampp\htdocs\id\grab_domain.php on line 22, But for some reason, I still get blank page on my website. The Java URL takes care of the rest. That Dan Switzer is a really brilliant programmer. I need to pass regular expression. Regex validao nmero celular e fixo Check demo. Can a timeseries with a clear trend be considered stationary? I just put that in a php file, and it ran just fine. I see a complete blank page. You are not going to go very far if you keep just copying and pasting random code you find on the internet into your project. Eg: And pasted this code, which I grabbed from that link: And, I saw a blank page. And that could fail on some urls. How would electric weapons used by mermaids function, if feasible? How do you access the matched groups in a JavaScript regular expression? But if you need a clear example of the constant direction changing and/or the ambiguity of your postings, look no further than this: What am I supposed to take away from that? Yes, I've made sure to use the case-less modifier (i) and to escape the . All content is the property of Ben Nadel. If you really don't want to use a library, and insist on reinventing the wheel, then at least do something like the following: Essentially, you are delegating the extraction of the subdomain/domain part of the URL to the browser's URL parsing logic, which is MUCH better than anything you will ever write. Your regex takes care of most of the URL types that we are going to encounter. Trending is based off of the highest score sort and falls back to it if no posts are trending. Sure we can go with that summary, if not taking that literally to reflect as an actual constant variable that most languages support (dont confuse the two, even though they are similar). It is only working on xampp. 465), Design patterns for asynchronous API communication. Want to use code from this post? Remember, this is just rough experimenting).