Case-sensitive matching of a keyword, where the keyword is not a substring of other words.

Remove autogenerated file name suffixes from images whilst preserving the extension (e.g. .jpg) These suffixes are usually added when filename already exists in the directory an image is being saved to by an application. Magento is a fine example of a system that does this.

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find pronouceable 10 letter srings that are either all caps or all lowercases based on jsbin.com pronouceable urls

Validates a US mm-dd-yy(yy) with an optional hh:mm:ss time.

This pattern would select the whole image tag

ICD-10-CM Diagnosis Code per https://www.cms.gov/Medicare/Coding/ICD10/downloads/ICD-10Overview.pdf

Strip specific HTML tags from a string—opposite of PHP's strip_tags(). Replace letter 'p' with your tag name. Using PHP preg_replace(), example: preg_replace('/(]>)(.?)()|(]*>)/i', '$2', $string);

recognizes RAR archives (including splitted archives) and ZIP archives

Matches CSS Length Units according to: http://www.w3schools.com/cssref/css_units.asp

This is used when removing Script Tags and their content.

Match time duration in the following formats only: 1h 30m 59m 1h 33m 11h 2m

Matches proxies in ip:port format. Takes into account that octets cant start with a 0, and that octets that are not the first octet can be a 0 if there are no more numbers behind it.