源代码:
<?php $x=5; // global scope function myTest() { $y=10; // local scope echo "<p>Test variables inside the function:<p>"; echo "Variable x is: $x"; echo "<br />"; echo "Variable y is: $y"; } myTest(); echo "<p>Test variables outside the function:<p>"; echo "Variable x is: $x"; echo "<br />"; echo "Variable y is: $y"; ?>
运行结果：