Curso de Expresiones Regulares: Modos

Primer ejercicio del Curso de Expresiones Regulares

The username should be at least 2 characters long, can have lower and uppercase letters, and can only have numbers in the end.

further editing is required in code to get the filename without extension

This regex efficiently captures any U.S. state abbreviation in only 117 characters, as opposed to 159 characters to list each state individually.

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

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

Parse the Accept request HTTP header advertises which content types, expressed as MIME types, https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept

check if the phone number is correct, updated to 2018. controlla che il cellulare sia corretto, aggiornata al 2018

Handles single letter usernames, initial / trailing / consecutive periods, max length of 30 letters.

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