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<?php $str = "this is a Test String to get the last index of word with an uppercase letter in PHP"; $pattern = "/.*\s([A-Z])(\w+)/"; $pattern = "/.*\s([A-Z])([A-Z]+)/"; preg_match($pattern, $str, $match); $letter = $match[1]; $word = $match[1] . $match[2]; $position = strrpos($str, $match[1].$match[2]); echo "Letter to find: " . $letter . "\nWord to find: " . $word . "\nPosition of letter: " . $position;

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