This regular expression validates if given string is formatted in Base64, additional it accepts new lines, since payload can have new lines in it.

In (?!www.youtube.com\/|youtube.com\/|player.vimeo.com\/) u can add good sites for iframes: www.youtube.com/ player.vimeo.com/

Extract all Steam Keys from a Given String

validates strings in time format HH:mm with hour in 24h format. only accepts up to 23:59

Exception Message: java.lang.NullPointerException: Sample Java Logback Exception at Sample.errorLevel3(Sample.java:35) at Sample.errorLevel2(Sample.java:31) at Sample.errorLevel1(Sample.java:27)...

Drupal7 Media Element in node body - A regex to match the media module square bracketted token/element for embedde images in node body. Use case - using the body text trimmed in a meta description - need to remove the media element as well as strip tags.

Get all headings in a Markdown Format Text

Get all hyperlinks in a Markdown Format Text

Groupe d'information $1 $2 $3 $1 = Prénom + Nom $2 = (Information à récupérer ou à supprimer) $3 = Numéro de téléphone

"dot matches newline" must be activated. Search and replace by "" (empty string) removes duplicate lines anywhere in text. Example for Notepad++ use shown under http://stackoverflow.com/questions/3958350/removing-duplicate-rows-in-notepad

Check if brazilian names are imputed correctly. Ex: Paulo da Silva

/\b(+)\b/ig

Get TV Series name, season and episode numbers.

Get iframe src

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.

parse the apache access log