stream_wrapper_register

Allows you to implement your own protocol handlers and streams for use with all the other filesystem functions (such as fopen(), fread() etc.).

The wrapper name to be registered.

The classname which implements the protocol.

Should be set to STREAM_IS_URL if protocol is a URL protocol. Default is 0, local stream.

Returns TRUE on success or FALSE on failure.

stream_wrapper_register() will return FALSE if the protocol already has a handler.

Added the flags parameter.

<?php
$existed = in_array("var", stream_get_wrappers());
if ($existed) {
    stream_wrapper_unregister("var");
}
stream_wrapper_register("var", "VariableStream");
$myvar = "";

$fp = fopen("var://myvar", "r+");

fwrite($fp, "line1\n");
fwrite($fp, "line2\n");
fwrite($fp, "line3\n");

rewind($fp);
while (!feof($fp)) {
    echo fgets($fp);
}
fclose($fp);
var_dump($myvar);

if ($existed) {
    stream_wrapper_restore("var");
}

?>

line1
line2
line3
string(18) "line1
line2
line3
"

streamWrapper -

Example class registered as stream wrapper -

stream_wrapper_unregister() -

stream_wrapper_restore() -

stream_get_wrappers() -