{var $obj, $a, $b}
{!$obj instanceof what}
{$obj->prop}
{$a[0]}
{$a[]}
{1+2}
{1-2}
{'a' . 'b'}
{1*2}
{1/2}
{1%2}
{1==2==3}
{1!=2!=3}
{1===2===3}
{1!==2!==3}
{1<2<3}
{1>2>3}
{1<=2<=3}
{1>=2>=3}
{1&&2&&3}
{1||2||3}
{1=2}
{1+=2}
{1-=2}
{1*=2}
{1/=2}
{1.=2}
{1%=2}
{++1}
{--1}
{1++}
{1--}
{-$a}
{!$a}
{$a instanceof $b}