$x = 4 ; function assignx ( ) { $x = 0 ; print "\$x inside function is $x . <br>" ; } assignx ( ) ; print "\$x outside of function is $x . <br>" ; 代码的执行结果为: $x inside function is 0 . $x outside function is 4 .
$x = 4 ; function assignx ( ) { $x = 0 ; print "\$x inside function is $x . <br>" ; } assignx ( ) ; print "\$x outside of function is $x . <br>" ; 代码的执行结果为: $x inside function is 0 . $x outside function is 4 .