Example General Resource Tools

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JCB credit card number validation
All credit card numbers issued by JCB have 3 sets of numbers: JCB cards start with 2131 have 15 digits. JCB cards start with 1800 have 15 digits. JCB cards start with 35 have 16 digits. For example, 3566002020360505 is a valid Visa credit card number. How to write a single regular expression to vali... 2025-03-19, ≈40🔥, 2💬

💬 2025-03-19 Todd: Regex is incorrect. Correct version: $pattern = "/^(?:2131|1800|35(?:2[8-9]|[3-8]\d{ 1})\d{1})\d{11}$/";

💬 2019-01-01 Julie: Thanks!

Diners Club credit card number validation
All credit card numbers issued by Diners Club must start with 300 through 305, 36 or 38 and have 14 digits. For example, 38520000023237 is a valid Visa credit card number. How to write a single regular expression to validate a Diners Club credit card number described above? Here is the regular expre... 2024-01-10, ≈25🔥, 1💬

Validating GUID or UUID
How to write a regular expression to validate GUID (Globally Unique IDentifier) or UUID (Universally Unique IDentifier)? Here is a list of good and bad GUID examples: {D1A5279D-B27D-4CD4-A05E-EFDD5 3D08E8D}{594ABD08-C02C-4827-8ABF-A1280 06848A3}{B59511BD6A5F4DF09ECF562A108D8 A2E}69593D62-71EA-4548-8... 2022-10-01, ≈25🔥, 2💬

💬 2022-10-01 Walson: Okay, it looks good!

💬 2013-11-26 awanthiia: this validation regex format doesnot work for your UUID generation

Discover credit card number validation
All credit card numbers issued by Diners Club must start with 6011 or 65 and have 16 digits. For example, 6011186767363105 is a valid Visa credit card number. How to write a single regular expression to validate a Discover credit card number described above? Here is the regular expression to validat... 2021-02-13, ≈11🔥, 3💬

💬 2021-02-13 Jeanie: I cannot for the life of me figure this out

💬 2020-04-10 ddd: 6011415014288116

MAC address validation
According to the IEEE 802 specification, a MAC address has 6 groups of 2 hexadecimal digits separated by "-" or ":". For example, 0a-1b-3c-4d-5e-6f is a valid MAC address. How to write a single regular expression to validate a MAC address described above? Here is the regular expression for MAC addre... 2020-08-03, ≈39🔥, 6💬

💬 2020-08-03 chelseaclark: Creative Bioarray offers specialized transporter panels and customized transporter screening services enable you to identify nov...

💬 2017-05-15 aditya: thank you very much. Its 100% working.

💬 2016-06-23 FYIcenter.com: Hi Taylan, The test page is back working now. Try it.

(More comments ...)

Parsing key-value entries from Windows .INI files
How to write a regular expression to parse key-value entries from Windows .INI files? Here is an example Windows .INI file, system.ini: ; for 16-bit app support [386Enh] woafont=dosapp.fon EGA80WOA.FON=EGA80WOA.FON EGA40WOA.FON=EGA40WOA.FON CGA80WOA.FON=CGA80WOA.FON CGA40WOA.FON=CGA40WOA.FON [driver... 2019-09-16, ≈17🔥, 2💬

💬 2019-09-10 FYIcenter.com: @mike, comment line will be ignored.

💬 2019-09-07 mikeT: What about lines that have comments?

Parsing Windows TREE Command Output
Regex for parse output of Windows TREE command. For example: Folder PATH listing Volume serial number is 8704-028C C: +---BIOS | \---E0CN23WW | E0CN23WW.exe | +---driveri | 0rww03af.exe | 2tl502af.exe | 2tl602af.exe | 365.10-notebook-win10-64bit-in ternational-whql(1).exe | bob501af.exe | e0cn23ww_i... 2016-06-23, ∼7525🔥, 0💬

Email address @ sign validation
According to the Internet specification RFC 2822, an email address must have a single "@" sign. For example, john@host.net is a valid email address. There should be at least one character before the "@" sign, but the total number of characters before the "@" sign should not be more than 64. There sh... 2016-06-23, ∼8228🔥, 0💬

Capturing Plukkie Crawler entries from Apache Web log file
How to capture the Plukkie Crawler entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Plukkie/1.5; http://www.botje.com/plukkie.h tm)""-" 213.135.131.79 - - [13/May/2012:17... 2016-06-21, ∼7824🔥, 0💬

Capturing Soso Spider entries from Apache Web log file
How to capture the Soso Spider entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Sosospider+(+http://help.soso .com/webspider.htm)""-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit... 2013-02-04, ≈13🔥, 0💬

Capturing Jike Spider entries from Apache Web log file
How to capture the Jike Spider entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; JikeSpider; +http://shoulu.jike.com/spider .html)""-" 213.135.131.79 - - [13/May/2012:17:3... 2013-02-04, ≈11🔥, 0💬

Capturing Proximic Spider entries from Apache Web log file
How to capture the Proximic Spider entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; proximic; +http://www.proximic.com/info/ spider.php)""-" 213.135.131.79 - - [13/May/20... 2013-02-04, ∼8798🔥, 0💬

Capturing Sogou web spider entries from Apache Web log file
How to capture the Sogou web spider entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Sogou web spider/4.0(+http://www.sogou.c om/docs/help/webmasters.htm#07 )""-" 213.135.131.79 - - [13/May/2012:1... 2013-02-04, ≈19🔥, 0💬

Capturing Baidu spider entries from Apache Web log file
How to capture the Baidu spider entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/s pider.html)""-" 213.135.131.79 - - [13/Ma... 2013-02-04, ≈13🔥, 0💬

Capturing Ezooms bot entries from Apache Web log file
How to capture the Ezooms bot entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Plukkie/1.5; http://www.botje.com/plukkie.h tm)""-" 213.135.131.79 - - [13/May/2012:17:35:3... 2013-02-04, ∼9134🔥, 0💬

Capturing MSN bot entries from Apache Web log file
How to capture the MSN (Microsoft Network) bot entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ ysearch/slurp)""-" 213.135.13... 2013-02-04, ≈15🔥, 0💬

Capturing Bing bot entries from Apache Web log file
How to capture the Bing bot entries from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ ysearch/slurp)""-" 213.135.131.79 - - [13/May/20... 2013-02-04, ∼9134🔥, 0💬

Capturing Google Bot entries from Apache Web log file
How to capture the Google Bot from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ ysearch/slurp)""-" 213.135.131.79 - - [13/May/2012:17:... 2013-02-04, ∼9006🔥, 0💬

Capturing Yandex Bot entries from Apache Web log file
How to capture the Yandex Bot from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ ysearch/slurp)""-" 213.135.131.79 - - [13/May/2012:17:... 2013-02-04, ≈10🔥, 0💬

Capturing Yahoo! Slurp entries from Apache Web log file
How to capture the Yahoo! Slurp from Web log file? Here are some Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ ysearch/slurp)""-" 213.135.131.79 - - [13/May/2012:1... 2013-02-04, ∼7924🔥, 0💬

Capturing request method from Apache Web log file
How to capture the request method from Apache Web log file? Here are some Apache Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "-" "-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit.jsp HTTP/1.0" 200 2326 "-" "-" "SID=1... 2013-02-04, ∼7644🔥, 0💬

Parsing timestamp from Apache Web log file
How to parse timestamp elements from from Apache Web log file? Here are some Apache Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "-" "-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit.jsp HTTP/1.0" 200 2326 "-" "-" "SI... 2013-02-04, ∼7333🔥, 0💬

Capturing request path from Apache Web log file
How to capture the request path from Apache Web log file? Here are some Apache Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "-" "-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit.jsp HTTP/1.0" 200 2326 "-" "-" "SID=100... 2013-02-04, ∼6269🔥, 0💬

Capturing request protocol from Apache Web log file
How to capture the request protocol from Apache Web log file? Here are some Apache Web log file entries: 127.0.0.1 - frank [10/May/2012:13:55:36 -0700] "GET /apache_pb.gif HTTP/1.0" 200 2326 "-" "-" "-" 213.135.131.79 - - [13/May/2012:17:35:32 -0600] "POST /submit.jsp HTTP/1.0" 200 2326 "-" "-" "SID... 2013-02-04, ∼6201🔥, 0💬

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Example General Resource Tools