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 stream_is_local  Letztes Update:
24.10.2014
stream_register_wrapper 

stream_notification_callback

(PHP 5 >= 5.2.0)

stream_notification_callbackA callback function for the notification context parameter

Beschreibung

void stream_notification_callback ( int $notification_code , int $severity , string $message , int $message_code , int $bytes_transferred , int $bytes_max )

A callable function, used by the notification context parameter, called during an event.

Hinweis:

This is not a real function, only a prototype of how the function should be.

Parameter-Liste

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.

Rückgabewerte

Es wird kein Wert zurückgegeben.

Beispiele

Beispiel #1 stream_notification_callback() example

<?php
function stream_notification_callback($notification_code$severity$message$message_code$bytes_transferred$bytes_max) {

    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:
            
var_dump($notification_code$severity$message$message_code$bytes_transferred$bytes_max);
            
/* Ignore */
            
break;

        case 
STREAM_NOTIFY_REDIRECTED:
            echo 
"Being redirected to: "$message;
            break;

        case 
STREAM_NOTIFY_CONNECT:
            echo 
"Connected...";
            break;

        case 
STREAM_NOTIFY_FILE_SIZE_IS:
            echo 
"Got the filesize: "$bytes_max;
            break;

        case 
STREAM_NOTIFY_MIME_TYPE_IS:
            echo 
"Found the mime-type: "$message;
            break;

        case 
STREAM_NOTIFY_PROGRESS:
            echo 
"Made some progress, downloaded "$bytes_transferred" so far";
            break;
    }
    echo 
"\n";
}

$ctx stream_context_create();
stream_context_set_params($ctx, array("notification" => "stream_notification_callback"));

file_get_contents("http://php.net/contact"false$ctx);
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

Connected...
Found the mime-type: text/html; charset=utf-8
Being redirected to: http://no.php.net/contact
Connected...
Got the filesize: 0
Found the mime-type: text/html; charset=utf-8
Being redirected to: http://no.php.net/contact.php
Connected...
Got the filesize: 4589
Found the mime-type: text/html;charset=utf-8
Made some progress, downloaded 0 so far
Made some progress, downloaded 0 so far
Made some progress, downloaded 0 so far
Made some progress, downloaded 1440 so far
Made some progress, downloaded 2880 so far
Made some progress, downloaded 4320 so far
Made some progress, downloaded 5760 so far
Made some progress, downloaded 6381 so far
Made some progress, downloaded 7002 so far

Beispiel #2 Simple progressbar for commandline download client

<?php
function usage($argv) {
    echo 
"Usage:\n";
    
printf("\tphp %s <http://example.com/file> <localfile>\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);

$ctx stream_context_create();
stream_context_set_params($ctx, 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:

Connected...
Mime-type: text/html; charset=utf-8
Being redirected to: http://no2.php.net/distributions/php-5.2.5.tar.bz2
Connected...
Filesize: 7773024
Mime-type: application/octet-stream
[========================================>                                                           ] 40% (3076/7590 kb)

Siehe auch

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