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<?php
namespace RocketTheme\Toolbox\File;
/**
* Implements PHP File reader.
*
* @package RocketTheme\Toolbox\File
* @author RocketTheme
* @license MIT
*/
class PhpFile extends File
{
/**
* @var string
*/
protected $extension = '.php';
/**
* @var array|File[]
*/
static protected $instances = array();
/**
* Saves PHP file and invalidates opcache.
*
* @param mixed $data Optional data to be saved, usually array.
* @throws \RuntimeException
*/
public function save($data = null)
{
parent::save($data);
// Invalidate configuration file from the opcache.
if (function_exists('opcache_invalidate')) {
// PHP 5.5.5+
@opcache_invalidate($this->filename, true);
} elseif (function_exists('apc_invalidate')) {
// APC
@apc_invalidate($this->filename);
}
}
/**
* Check contents and make sure it is in correct format.
*
* @param array $var
* @return array
* @throws \RuntimeException
*/
protected function check($var)
{
if (!(is_array($var) || is_object($var))) {
throw new \RuntimeException('Provided data is not an array');
}
return $var;
}
/**
* Encode configuration object into RAW string (PHP class).
*
* @param array $var
* @return string
* @throws \RuntimeException
*/
protected function encode($var)
{
// Build the object variables string
return "<?php\nreturn {$this->encodeArray((array) $var)};\n";
}
/**
* Method to get an array as an exported string.
*
* @param array $a The array to get as a string.
* @param int $level Used internally to indent rows.
*
* @return array
*/
protected function encodeArray(array $a, $level = 0)
{
$r = [];
foreach ($a as $k => $v) {
if (is_array($v) || is_object($v)) {
$r[] = var_export($k, true) . " => " . $this->encodeArray((array) $v, $level + 1);
} else {
$r[] = var_export($k, true) . " => " . var_export($v, true);
}
}
$space = str_repeat(" ", $level);
return "[\n {$space}" . implode(",\n {$space}", $r) . "\n{$space}]";
}
/**
* Decode PHP file into contents.
*
* @param string $var
* @return array
*/
protected function decode($var)
{
$var = (array) include $this->filename;
return $var;
}
}