stream_notification_callbackA callback function for the notification context paramater
&reftitle.description;
voidstream_notification_callbackintnotification_codeintseveritystringmessageintmessage_codeintbytes_transferredintbytes_max
A callback function, used by the
notification context parameter,
called during an event.
This is not a real function, only a prototype of how the function should
be.
&reftitle.parameters;
notification_code
One of the STREAM_NOTIFY_* notification constants.
severity
One of the STREAM_NOTIFY_SEVERITY_* notification constants.
message
Passed if a descriptive message is available for the event.
message_code
Passed if a descriptive message code is available for the event.
The meaning of this value is dependent on the specific wrapper in use.
bytes_transferred
If applicable, the bytes_transferred will be
populated.
bytes_max
If applicable, the bytes_max will be
populated.
&reftitle.returnvalues;
&return.void;
&reftitle.examples;
<function>stream_notification_callback</function> example
"stream_notification_callback"));
file_get_contents("http://php.net/contact", false, $ctx);
?>
]]>
&example.outputs.similar;
Simple progressbar for commandline download client\n", $argv[0]);
exit(1);
}
function stream_notification_callback($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max) {
static $filesize = null;
switch($notification_code) {
case STREAM_NOTIFY_RESOLVE:
case STREAM_NOTIFY_AUTH_REQUIRED:
case STREAM_NOTIFY_COMPLETED:
case STREAM_NOTIFY_FAILURE:
case STREAM_NOTIFY_AUTH_RESULT:
/* Ignore */
break;
case STREAM_NOTIFY_REDIRECTED:
echo "Being redirected to: ", $message, "\n";
break;
case STREAM_NOTIFY_CONNECT:
echo "Connected...\n";
break;
case STREAM_NOTIFY_FILE_SIZE_IS:
$filesize = $bytes_max;
echo "Filesize: ", $filesize, "\n";
break;
case STREAM_NOTIFY_MIME_TYPE_IS:
echo "Mime-type: ", $message, "\n";
break;
case STREAM_NOTIFY_PROGRESS:
if ($bytes_transferred > 0) {
if (!isset($filesize)) {
printf("\rUnknown filesize.. %2d kb done..", $bytes_transferred/1024);
} else {
$length = (int)(($bytes_transferred/$filesize)*100);
printf("\r[%-100s] %d%% (%2d/%2d kb)", str_repeat("=", $length). ">", $length, ($bytes_transferred/1024), $filesize/1024);
}
}
break;
}
}
isset($argv[1], $argv[2]) or usage($argv);
$ctx = stream_context_create(null, array("notification" => "stream_notification_callback"));
$fp = fopen($argv[1], "r", false, $ctx);
if (is_resource($fp) && file_put_contents($argv[2], $fp)) {
echo "\nDone!\n";
exit(0);
}
$err = error_get_last();
echo "\nErrrrrorr..\n", $err["message"], "\n";
exit(1);
?>
]]>
Executing the example above with:
php -n fetch.php
http://no2.php.net/get/php-5-LATEST.tar.bz2/from/this/mirror
php-latest.tar.bz2 will output something similar too:
] 40% (3076/7590 kb)
]]>
&reftitle.seealso;