<?php
    echo "<pre>";
    print_r(stream_get_wrappers());     
    print_r(stream_get_filters());     
    print_r(stream_get_transports());     
    echo "</pre>";
?>
Output
Array
(
    [0] => https
    [1] => ftps
    [2] => compress.zlib
    [3] => php
    [4] => file
    [5] => glob
    [6] => data
    [7] => http
    [8] => ftp
    [9] => phar
)
Array
(
    [0] => zlib.*
    [1] => string.rot13
    [2] => string.toupper
    [3] => string.tolower
    [4] => convert.*
    [5] => consumed
    [6] => dechunk
    [7] => convert.iconv.*
)
Array
(
    [0] => tcp
    [1] => udp
    [2] => unix
    [3] => udg
    [4] => ssl
    [5] => tls
    [6] => tlsv1.0
    [7] => tlsv1.1
    [8] => tlsv1.2
    [9] => tlsv1.3
)
Examples
<?php
readfile("php://filter/read=string.toupper/resource=http://www.example.com");

$fp = fopen("compress.zlib://foo-bar.txt.gz", "wb");

$httpsfile = file_get_contents("https://www.example.com/foo.txt");

$sock = fsockopen("ssl://secure.example.com", 443, $errno, $errstr, 30);

?>
stream_copy_to_stream
<?php
$src = fopen('http://www.example.com','r');
$dest1 = fopen('first1k.txt','w');
$dest2 = fopen('remainder.txt','w');

stream_copy_to_stream($src, $dest1, 1024);
stream_copy_to_stream($src, $dest2); 
?>
file_put_contents
<?php
$stream = fopen($url,'r');
$dest1 = fopen('first1k.txt','w');
stream_copy_to_stream($stream, $dest1, 1024);
file_put_contents('remainder.txt', $stream);
?>