title: What is the default time after which an HTTP request is deemed to have timed out?
body: <p>For PHP, what is the default time after which an HTTP request is deemed to have timed out? </p>
  
  <p>I'm using the PECL HTTP extension to make HTTP requests. I can set a timeout limit when making a request, however I'd like to know what the default is if nothing is explicitly specified.</p>
  
  <p>I've hunted through the PHP manual to no avail. I'd appreciate answers supported by evidence, such as a link to the relevant manual page, as opposed to speculative suggestions.</p>
  
  <p>I'm keen to find out what the default timeout <em>actually</em> is not just what it <em>probably</em> is. I can guess it may <em>probably</em> be 30 seconds as this seems a reasonable value, however I can find nothing to confirm or deny this.</p>