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<?php
declare(strict_types=1);
namespace Dotenv\Repository\Adapter;
use PhpOption\None;
use PhpOption\Option;
use PhpOption\Some;
final class ApacheAdapter implements AdapterInterface
{
/**
* Create a new apache adapter instance.
*
* @return void
*/
private function __construct()
{
//
}
/**
* Create a new instance of the adapter, if it is available.
*
* @return \PhpOption\Option<\Dotenv\Repository\Adapter\AdapterInterface>
*/
public static function create()
{
if (self::isSupported()) {
/** @var \PhpOption\Option<AdapterInterface> */
return Some::create(new self());
}
return None::create();
}
/**
* Determines if the adapter is supported.
*
* This happens if PHP is running as an Apache module.
*
* @return bool
*/
private static function isSupported()
{
return \function_exists('apache_getenv') && \function_exists('apache_setenv');
}
/**
* Read an environment variable, if it exists.
*
* @param non-empty-string $name
*
* @return \PhpOption\Option<string>
*/
public function read(string $name)
{
/** @var \PhpOption\Option<string> */
return Option::fromValue(apache_getenv($name))->filter(static function ($value) {
return \is_string($value) && $value !== '';
});
}
/**
* Write to an environment variable, if possible.
*
* @param non-empty-string $name
* @param string $value
*
* @return bool
*/
public function write(string $name, string $value)
{
return apache_setenv($name, $value);
}
/**
* Delete an environment variable, if possible.
*
* @param non-empty-string $name
*
* @return bool
*/
public function delete(string $name)
{
return apache_setenv($name, '');
}
}
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