Developer
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\VarDumper;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;
use Symfony\Component\VarDumper\Caster\ReflectionCaster;
use Symfony\Component\VarDumper\Cloner\VarCloner;
use Symfony\Component\VarDumper\Dumper\CliDumper;
use Symfony\Component\VarDumper\Dumper\ContextProvider\CliContextProvider;
use Symfony\Component\VarDumper\Dumper\ContextProvider\RequestContextProvider;
use Symfony\Component\VarDumper\Dumper\ContextProvider\SourceContextProvider;
use Symfony\Component\VarDumper\Dumper\ContextualizedDumper;
use Symfony\Component\VarDumper\Dumper\HtmlDumper;
use Symfony\Component\VarDumper\Dumper\ServerDumper;
// Load the global dump() function
require_once __DIR__.'/Resources/functions/dump.php';
/**
* @author Nicolas Grekas <p@tchwork.com>
*/
class VarDumper
{
/**
* @var callable|null
*/
private static $handler;
public static function dump(mixed $var)
{
if (null === self::$handler) {
self::register();
}
return (self::$handler)($var);
}
public static function setHandler(callable $callable = null): ?callable
{
$prevHandler = self::$handler;
// Prevent replacing the handler with expected format as soon as the env var was set:
if (isset($_SERVER['VAR_DUMPER_FORMAT'])) {
return $prevHandler;
}
self::$handler = $callable;
return $prevHandler;
}
private static function register(): void
{
$cloner = new VarCloner();
$cloner->addCasters(ReflectionCaster::UNSET_CLOSURE_FILE_INFO);
$format = $_SERVER['VAR_DUMPER_FORMAT'] ?? null;
switch (true) {
case 'html' === $format:
$dumper = new HtmlDumper();
break;
case 'cli' === $format:
$dumper = new CliDumper();
break;
case 'server' === $format:
case $format && 'tcp' === parse_url($format, \PHP_URL_SCHEME):
$host = 'server' === $format ? $_SERVER['VAR_DUMPER_SERVER'] ?? '127.0.0.1:9912' : $format;
$dumper = \in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) ? new CliDumper() : new HtmlDumper();
$dumper = new ServerDumper($host, $dumper, self::getDefaultContextProviders());
break;
default:
$dumper = \in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) ? new CliDumper() : new HtmlDumper();
}
if (!$dumper instanceof ServerDumper) {
$dumper = new ContextualizedDumper($dumper, [new SourceContextProvider()]);
}
self::$handler = function ($var) use ($cloner, $dumper) {
$dumper->dump($cloner->cloneVar($var));
};
}
private static function getDefaultContextProviders(): array
{
$contextProviders = [];
if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true) && class_exists(Request::class)) {
$requestStack = new RequestStack();
$requestStack->push(Request::createFromGlobals());
$contextProviders['request'] = new RequestContextProvider($requestStack);
}
$fileLinkFormatter = class_exists(FileLinkFormatter::class) ? new FileLinkFormatter(null, $requestStack ?? null) : null;
return $contextProviders + [
'cli' => new CliContextProvider(),
'source' => new SourceContextProvider(null, null, $fileLinkFormatter),
];
}
}
Developer
To ensure a smooth integration process and optimal performance, follow these best practices: