(PHP 4 >= 4.3.2, PHP 5, PHP 7)
Register a URL wrapper implemented as a PHP class
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.
Returns:
Returns TRUE on success or FALSE on failure.
stream_wrapper_register() will return FALSE if the protocol already has a handler.
Changelog:
5.2.4
Added the flags parameter.
Examples:
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:
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