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Precedence with word operators and short-circuit operators

$x=5; $y=6; $z=0; $result=$x && $y && $z;       # Precedence of = lower than && print "Result: $result\n"; $result2 = $x and $y and $z;  # Precedence of = higher than and print "Result: $result2\n"; $result3 = ( $x and $y and $z ); print "Result: $result3\n";