stream_get_wrappers

(PHP 5)

stream_get_wrappers — Retrieve list of registered streams

Description

array stream_get_wrappers ( void )

Returns an indexed array containing the name of all stream wrappers available on the running system.

Example #1 stream_get_wrappers() example


<?php
print_r(stream_get_wrappers());
?>

上例的输出类似于：

Array
(
    [0] => php
    [1] => file
    [2] => http
    [3] => ftp
    [4] => compress.bzip2
    [5] => compress.zlib
)

Example #2 Checking for the existence of a stream wrapper


<?php
// check for the existence of the bzip2 stream wrapper
if (in_array('compress.bzip2', stream_get_wrappers())) {
    echo 'compress.bzip2:// support enabled.';
} else {
    echo 'compress.bzip2:// support not enabled.';
}
?>