stream_notification_callback

PHP 5 >= 5.2.0, PHP 7, PHP 8

stream_notification_callback - A callback function for the notification context parameter

Code Examples

Example #1 stream_notification_callback example

Result: 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

<?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);

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PHP Version:

Example #2 Simple progressbar for commandline download client

Result: 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)

<?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);

Edit/Test in Sandbox

PHP Version:

stream_notification_callback

Example #1 stream_notification_callback example

Example #2 Simple progressbar for commandline download client

Function stream_notification_callback:

Streams Functions

Most used PHP functions