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<html><body><h1>Regex Modifier: [A-Z]</h1><p>How many letters in the text "Welcome to W3Schools" are alphabetically between uppercase "A" and uppercase "Z":</p>$txt = "Welcome to W3Schools";$pattern = "/[A-Z]/";echo preg_match_all($pattern, $txt); <p>The matches were found here:</p>echo preg_replace($pattern, "#", $txt); <p>(Each match was replaced by a # character)</p></body></html>Regex Modifier: [A-Z]
How many letters in the text "Welcome to W3Schools" are alphabetically between uppercase "A" and uppercase "Z":
3The matches were found here:
#elcome to #3#chools(Each match was replaced by a # character)