code generation

code-gen.php

<?php

$namespace = "App";
$classname = "Kernel";
$extends = "\\Symfony\\Kernel";
$implements = [
"\\App\\Contract\\KernelContract"
];
$properties = [
    [
        "name" => 'root',
        'privacy' => 'protected',
        'static' => false
    ]  
];
$methods = [
    [
		'privacy' => 'public',
        "name" => "__construct",
        'static' => false,
		"params" => [
			[
				"type" => "string",
				"name" => "root"
			]
		],
		'content' => 'echo $root;'
    ]  
];

$result = [];
$result[] = '<?php';
$result[] = '';
$result[] = 'namespace ' . $namespace . ';';
$result[] = '';
$classline = 'class ' . $classname . ' extends ' . $extends . ' implements ';
foreach ($implements as $implementation) {
    $classline .= $implementation . ', ';
}
$result[] = rtrim($classline, ', ');
$result[] = "{";
foreach($properties as $property) {
    $result[] = "\t" . $property['privacy'] . ($property['static'] ? ' static ' : ' ') . '$' . $property['name'] . ';';
    $result[] = "\t";
}

foreach ($methods as $index => $method) {
	$sLine = "\t{$method['privacy']}" . ($method['static'] ? ' static' : '') . ' function ' . $method['name'] . '(';

	foreach ($method['params'] as $param) {
		$sLine .= "{$param['type']} \${$param['name']}";
	}
	$sLine .= ")";
	$result[] = $sLine;
	$result[] = "\t{";
	if ($method['content']) {
		$result[] = "\t\t{$method['content']}";
	}
	$result[] = "\t}";

	if ($index != count($methods) - 1) {
		$result[] = '';
	}
}

$result[] = "}";
$result[] = '';
echo implode("\n", $result);

/* result
<?php

namespace App;

class Kernel extends \Symfony\Kernel implements \App\Contract\KernelContract
{
        protected $root;

        public function __construct(string $root)
        {
                echo $root;
        }
}
*/