3v4l.org

run code in 300+ PHP versions simultaneously
<?php $name='why';//定义变量name,并初始化 function echoName() { //通过global来声明$name，相当于传递参数 global $name;//global是起传递参数的作用，而并非使变量的作用域为全局。 echo 'myname is'.$name; } echoName(); echo $name;
Output for git.master, git.master_jit, rfc.property-hooks
myname iswhywhy

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
54.99 ms | 401 KiB | 8 Q