Misc. Funções
In order to detect a disconnection inside the script we need to flush the buffer (it is only when the the server tries to send the buffer content that it will see that the connection is broken).
Thus we need to use the ob_implicit_flush() function to flush automatically the buffer
This is an example of a disconnection detection :
<?php
// enables the automatic flush
ob_implicit_flush();
function verifyCommunication() {
$status = (connection_aborted()?"not ":"") ."sent";
persistCommunication(new Communication($status));
}
// we will check the communication state when the script finished
register_shutdown_function(verifyCommunication);
echo "blabla";
// this sleep is used to have time to break the connection on the client side
sleep(10);
echo"tata";
?>
I use such a process to cancel a request if the client didn't get the acknowledgement because he will redo his request...
connection_aborted
(PHP 4, PHP 5)
connection_aborted — Verifica se o cliente está desconectado
Descrição
int connection_aborted
( void
)
Verifica se o cliente está desconectado.
Valor Retornado
Retorna 1 se o cliente está desconectado, 0 caso contrário.
Veja Também
- connection_status() - Retorna o status da conexão
- ignore_user_abort() - Estabelece se acontecerá o encerramento do script quando o usuário abortar a conexão
- Tratamento de conexões para um descrição completa sobre tratamento de conexões no PHP.
User Contributed Notes
connection_aborted
connection_aborted
Luciano
18-Dec-2009 07:01
18-Dec-2009 07:01
rickyale at ig dot com dot br
13-Nov-2009 05:49
13-Nov-2009 05:49
(connection_aborted not working)
I had this problem years ago, now the problem came back after upgrading php... i tried everything i found and in the end the function ob_end_flush(); on top of script as post in php bug track solved the problem. Im using windows 7 x64 / php 5.2.4 / apache 2.2.14 (win32)
try adding ob_end_flush(); on top of you script.
i read something about this but can't remember where, it was related to a bug or something.
hope this help.
phpcoder at cyberpimp dot techlab dot info
27-Jun-2007 03:50
27-Jun-2007 03:50
Although the documentation indicates it returns an int, I found comparing the return value with numeric values does not seem to work.
Example (does not work):
<?php
if (connection_aborted()==1) {
fwrite($filehandle, 'aborted!');
}
?>
You're better off just assuming it returns boolean
Example (does work):
<?php
if (connection_aborted()) {
fwrite($filehandle, 'aborted!');
}
?>
rickyale at ig dot com dot br
13-Dec-2002 10:29
13-Dec-2002 10:29
I know why nobody can use the functions connection_XXX(). If the php code do not send anything to buffer, the php dont check the connection, so, the connection_timeout will still NORMAL and will not be ABORTED.
Ex
<?php
Set_Time_Limit(0); //this you know what gonna do
Ignore_User_Abort(True); //this will force the script running at the end
While(!Connection_Aborted()) {
Echo "\n"; //this will save de while
Flush(); //Now php will check de connection
While(CONDITION) {
Echo "My chat....";
}
Sleep(1);
}
?>
end