Question

How to capture call disconnect for asterisk using PHPAGI ?
For e.g. if user disconnects the call which event is invoked ? How to capture it ?

Answer 1

You can check the Return Results of your PHP-AGI API calls,
for example stream_file returns -1 on hangup.

You could also invoke another AGI Script on the h Extension in the Dialplan.

If you have to clean up something, you could also register a Shutdown function.

Another Approach is to register a Signal Handler which edmund long described in his blog. PCNTL is a PHP extension, to enable PCNTL recompile PHP with --enable-pcntl.

<?php
declare(ticks=1);

function sig_handler($signo)
{   //Do some stuff in here
    exit(0);
}

//Register the hangup handler
if (function_exists('pcntl_signal'))
{
      pcntl_signal(SIGHUP,  "sig_handler");
}