VarDumper组件

require __DIR__.'/vendor/autoload.php';
 
// create a variable, which could be anything!
// 创建一个变量，可以是任意内容！
$someVar = ...;
 
dump($someVar);

class ExampleTest extends \PHPUnit_Framework_TestCase
{
    use \Symfony\Component\VarDumper\Test\VarDumperTestTrait;
 
    public function testWithDumpEquals()
    {
        $testedVar = array(123, 'foo');
 
        $expectedDump = <<<EOTXT
array:2 [
  0 => 123
  1 => "foo"
]
EOTXT;
 
        $this->assertDumpEquals($expectedDump, $testedVar);
    }
}

$var = array(
    'a simple string' => "in an array of 5 elements",
    'a float' => 1.0,
    'an integer' => 1,
    'a boolean' => true,
    'an empty array' => array(),
);
dump($var);

class PropertyExample
{
    public $publicProperty = 'The `+` prefix denotes public properties,';
    protected $protectedProperty = '`#` protected ones and `-` private ones.';
    private $privateProperty = 'Hovering a property shows a reminder.';
}
 
$var = new PropertyExample();
dump($var);

class PropertyExample
{
    public $publicProperty = 'The `+` prefix denotes public properties,';
    protected $protectedProperty = '`#` protected ones and `-` private ones.';
    private $privateProperty = 'Hovering a property shows a reminder.';
}
 
$var = new PropertyExample();
dump($var);

class DynamicPropertyExample
{
    public $declaredProperty = 'This property is declared in the class definition';
}
 
$var = new DynamicPropertyExample();
$var->undeclaredProperty = 'Runtime added dynamic properties have `"` around their name.';
dump($var);

class ReferenceExample
{
    public $info = "Circular and sibling references are displayed as `#number`.\nHovering them highlights all instances in the same dump.\n";
}
$var = new ReferenceExample();
$var->aCircularReference = $var;
dump($var);

$var = new \ErrorException(
    "For some objects, properties have special values\n"
    ."that are best represented as constants, like\n"
    ."`severity` below. Hovering displays the value (`2`).\n",
    0,
    E_WARNING
);
dump($var);

$var = array();
$var[0] = 1;
$var[1] =& $var[0];
$var[1] += 1;
$var[2] = array("Hard references (circular or sibling)");
$var[3] =& $var[2];
$var[3][] = "are dumped using `&number` prefixes.";
dump($var);

$var = new \ArrayObject();
$var[] = "Some resources and special objects like the current";
$var[] = "one are sometimes best represented using virtual";
$var[] = "properties that describe their internal state.";
dump($var);

$var = new AcmeController(
    "When a dump goes over its maximum items limit,\n"
    ."or when some special objects are encountered,\n"
    ."children can be replaced by an ellipsis and\n"
    ."optionally followed by a number that says how\n"
    ."many have been removed; `9` in this case.\n"
);
dump($var);