Is PHP similar to WebBrowser event judgment, such as loading completion events and current loading status?

Does PHP determine WebBrowser-like events, such as loading completion events, and the current loading status, etc., namely void & nbsp; WebCompleted (object & nbsp; sender, & nbsp; WebBrowserDocumentCompletedEventArgs & nbsp; e) & n does PHP have WebBrowser-like event judgment, such as loading completion events and current loading status?
Is void WebCompleted (object sender, WebBrowserDocumentCompletedEventArgs e)
WebBrowserReadyState. Complete attribute

Or how to obtain the DOMDocument after the file is loaded;
WebBrowser? Php WebCompleted WebBrowserReadyState:
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Isn't JavaScript?
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You can load all the data you get, and use file_get_contents/curl.
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Incorrect browser version