Example -- Example for the usage of Stream_Var
Registering the wrapper
The following example shows you how to register
Stream_Var as a wrapper for the stream functions.
Accessing scalar variables
The following example show you how to
access scalar variables with fopen(),
fread(), frwite()
and fclose().
Example 44-2. Accessing scalar variables require_once "Stream/Var.php";
stream_wrapper_register( "var", "Stream_Var" );
$foo = "I really like tomatoes.";
echo "Content of foo: $foo<br />";
$fp = fopen('var://GLOBALS/foo','r+');
$data = fread($fp, 9);
echo "Read from stream: $data<br />";
fwrite($fp,"hate");
fclose($fp);
echo "Content of foo: $foo<br />"; |
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Accessing an array
The following example shows how to use
opendir() to access an array.
Example 44-3. Accessing an array require_once "Stream/Var.php";
stream_wrapper_register( "var", "Stream_Var" );
$dirname = 'var://_SERVER';
$dir = opendir($dirname);
echo "<strong>opening directory '$dirname'</strong><br><br>";
while ($entry = readdir($dir)) {
echo "opening file $dirname/$entry<br />";
if (!$fp = @fopen($dirname."/".$entry,"r")) {
echo "seems to be a directory<br /><br />";
continue;
}
echo "reading from $entry<br />";
while (!feof($fp)) {
echo fread($fp, 16);
}
fclose($fp);
echo "<br /><br />";
}
closedir($dir); |
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More examples
If you want to take a look at some more examples,
just install the package and they will be installed
in the docs directory.