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<!DOCTYPE html> <html> <body> <?php trait message1 { public function msg1() { echo "OOP is fun! "; } } trait message2 { public function msg2() { echo "OOP reduces code duplication!"; } } class Welcome { use message1; } class Welcome2 { use message1, message2; } $obj = new Welcome(); $obj->msg1(); echo "<br>"; $obj2 = new Welcome2(); $obj2->msg1(); $obj2->msg2(); ?> </body> </html>