Is it possible to write a regular expression that would match any words in a string that have TWO capital letters in the beginning of them.
Like:
$string = "DEar John"
Add a comment
|
2 Answers
Yes. Use the upper character class, which refers to uppercase characters:
http://php.net/manual/en/regexp.reference.character-classes.php
([[:upper:]][[:upper:]][[:alpha:]]*)
Tested on http://regex101.com/ in PHP PCRE mode.
Comments
Since you seem to label in your question "match any words in a string that have two capital letters in the beginning of them", you can use the Unicode Property \p{Lu} which matches an uppercase letter that has a lowercase variant and the Unicode Property \p{Ll} which matches a lowercase letter that has an uppercase variant.
/\p{Lu}{2}[\pLu\pLl]*/u
However, you could as well go with a basic regular expression.
/[A-Z]{2}(?i:[a-z]*)/
