stream_wrapper_register

(PHP 4 >= 4.3.2, PHP 5, PHP 7, PHP 8)

stream_wrapper_registerRegister a URL wrapper implemented as a PHP class

Descrizione

stream_wrapper_register(string $protocol, string $class, int $flags = 0): bool

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

Elenco dei parametri

protocol

The wrapper name to be registered. Valid protocol names must contain alphanumerics, dots (.), plusses (+), or hyphens (-) only.

class

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.

Valori restituiti

Restituisce true in caso di successo, false in caso di fallimento.

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

Esempi

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");
}

?>

Il precedente esempio visualizzerà:

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

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