Developer
<?php
declare(strict_types=1);
namespace Dotenv\Repository\Adapter;
final class ImmutableWriter implements WriterInterface
{
/**
* The inner writer to use.
*
* @var \Dotenv\Repository\Adapter\WriterInterface
*/
private $writer;
/**
* The inner reader to use.
*
* @var \Dotenv\Repository\Adapter\ReaderInterface
*/
private $reader;
/**
* The record of loaded variables.
*
* @var array<string,string>
*/
private $loaded;
/**
* Create a new immutable writer instance.
*
* @param \Dotenv\Repository\Adapter\WriterInterface $writer
* @param \Dotenv\Repository\Adapter\ReaderInterface $reader
*
* @return void
*/
public function __construct(WriterInterface $writer, ReaderInterface $reader)
{
$this->writer = $writer;
$this->reader = $reader;
$this->loaded = [];
}
/**
* Write to an environment variable, if possible.
*
* @param non-empty-string $name
* @param string $value
*
* @return bool
*/
public function write(string $name, string $value)
{
// Don't overwrite existing environment variables
// Ruby's dotenv does this with `ENV[key] ||= value`
if ($this->isExternallyDefined($name)) {
return false;
}
// Set the value on the inner writer
if (!$this->writer->write($name, $value)) {
return false;
}
// Record that we have loaded the variable
$this->loaded[$name] = '';
return true;
}
/**
* Delete an environment variable, if possible.
*
* @param non-empty-string $name
*
* @return bool
*/
public function delete(string $name)
{
// Don't clear existing environment variables
if ($this->isExternallyDefined($name)) {
return false;
}
// Clear the value on the inner writer
if (!$this->writer->delete($name)) {
return false;
}
// Leave the variable as fair game
unset($this->loaded[$name]);
return true;
}
/**
* Determine if the given variable is externally defined.
*
* That is, is it an "existing" variable.
*
* @param non-empty-string $name
*
* @return bool
*/
private function isExternallyDefined(string $name)
{
return $this->reader->read($name)->isDefined() && !isset($this->loaded[$name]);
}
}
Developer
To access the Kueue Pay Developer API, you’ll need an API key. You can obtain your API key by logging in to your Kueue Pay merchant account and navigating to the API section. Collect Client ID , Secret ID & Merchant ID Carefully. Keep your API key confidential and do not share it publicly.