<code>aa.php <span><span><?php</span><span>global</span><span>$a</span>; <span>require</span>(<span>'./b.php'</span>); <span>echo</span><span>"a ---:$a\n"</span>; b.php <span><?php</span><span>$a</span> = <span>123</span>; php aa.php 输出结果:a ---:<span>123</span> 去掉aa.php 里面的glocal <span>$a</span> php aa.php 输出结果是 a --: </span></code>
The above introduces the usage of php global, including global and php content. I hope it will be helpful to friends who are interested in PHP tutorials.