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stream_supports_lock

stream_wrapper_restore

Stream Functions

PHP Manual

stream_wrapper_register

(PHP 4 >= 4.3.2, PHP 5)

stream_wrapper_register — Register a URL wrapper implemented as a PHP class

Description

bool stream_wrapper_register ( string $protocol , string $classname [, int $flags = 0 ] )

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

Parameters

protocol: The wrapper name to be registered.
classname: The classname which implements the protocol.
flags: Should be set to STREAM_IS_URL if protocol is a URL protocol. Default is 0, local stream.

Return Values

Returns TRUE on success or FALSE on failure.

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

Changelog

Version	Description
5.2.4	Added the `flags` parameter.

Examples

Example #1 How to register a stream wrapper

 <?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");
}

?>

The above example will output:

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