This is an adapted version of the regex writen at the book Mastering Reguar Expressions.

This regex enforces the correct basic structure whilst only allowing permitted characters (RFC822) in both the local and domain parts. It permits + routing made popular by Gmail and allows for the + group to identified as routing. It allows all but the most extreme of valid email addresses i.e. "@" ...

Finds different variations of "Incorporation", e.g.: Inc, Inc. etc

This one gets close to handling most valid email address examples using the specification from RFC 282 ISO standard __ It doesn'T handle everything but manages fairly well...

X3D Regular Expressions (regexes): MFBool X3D MFBool is a list of boolean values, separated by whitespace or comma values http://www.web3d.org/specifications/X3dRegularExpressions.html#MFBool

X3D SFBool X3D SFBool is a single-field boolean value. http://www.web3d.org/specifications/X3dRegularExpressions.html#SFBool

X3D SFBool X3D SFBool is a single-field boolean value. http://www.web3d.org/specifications/X3dRegularExpressions.html#SFBool

Extensions sourced from here#Suffixes_for_compressed_files),

X3D bboxSize Three-tuple floating-point values with optional scientific notation, bounded non-negative or else -1 -1 -1 sentinel value. Derived from SFVec3f http://www.web3d.org/specifications/X3dRegularExpressions.html#bboxSize

preg_replace( '', '%newline%', $string )