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PHP stream_wrapper_register

PHP original manual for stream_wrapper_register [ show | php.net ]

stream_wrapper_register

(PHP 4 >= 4.3.2, PHP 5, PHP 7)

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
"

See Also