(PHP 5 >= 5.6.0, PHP 7, PHP 8)
phpdbg_exec — Attempts to set the execution context
$context
本函数还未编写文档，仅有参数列表。
context
If the execution context was set previously it is returned. If the execution context was not set previously true is returned. If the request to set the context fails, false is returned, and an E_WARNING raised.
true
false
E_WARNING
