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<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/

namespace Doctrine\Common\Util;

use Doctrine\Common\Persistence\Proxy;

/**
* Static class containing most used debug methods.
*
* @link www.doctrine-project.org
* @since 2.0
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
* @author Giorgio Sironi <piccoloprincipeazzurro@gmail.com>
*/
final class Debug
{
    /**
* Private constructor (prevents instantiation).
*/
    private function __construct()
    {
    }

    /**
* Prints a dump of the public, protected and private properties of $var.
*
* @link http://xdebug.org/
*
* @param mixed $var The variable to dump.
* @param integer $maxDepth The maximum nesting level for object properties.
* @param boolean $stripTags Whether output should strip HTML tags.
* @param boolean $echo Send the dumped value to the output buffer
*
* @return string
*/
    public static function dump($var, $maxDepth = 2, $stripTags = true, $echo = true)
    {
        $html = ini_get('html_errors');

        if ($html !== true) {
            ini_set('html_errors', true);
        }

        if (extension_loaded('xdebug')) {
            ini_set('xdebug.var_display_max_depth', $maxDepth);
        }

        $var = self::export($var, $maxDepth++);

        ob_start();
        var_dump($var);

        $dump = ob_get_contents();

        ob_end_clean();

        $dumpText = ($stripTags ? strip_tags(html_entity_decode($dump)) : $dump);

        ini_set('html_errors', $html);
        
        if ($echo) {
            echo $dumpText;
        }
        
        return $dumpText;
    }

    /**
* @param mixed $var
* @param int $maxDepth
*
* @return mixed
*/
    public static function export($var, $maxDepth)
    {
        $return = null;
        $isObj = is_object($var);

        if ($isObj && in_array('Doctrine\Common\Collections\Collection', class_implements($var))) {
            $var = $var->toArray();
        }

        if ($maxDepth) {
            if (is_array($var)) {
                $return = array();

                foreach ($var as $k => $v) {
                    $return[$k] = self::export($v, $maxDepth - 1);
                }
            } else if ($isObj) {
                $return = new \stdclass();
                if ($var instanceof \DateTime) {
                    $return->__CLASS__ = "DateTime";
                    $return->date = $var->format('c');
                    $return->timezone = $var->getTimeZone()->getName();
                } else {
                    $reflClass = ClassUtils::newReflectionObject($var);
                    $return->__CLASS__ = ClassUtils::getClass($var);

                    if ($var instanceof Proxy) {
                        $return->__IS_PROXY__ = true;
                        $return->__PROXY_INITIALIZED__ = $var->__isInitialized();
                    }

                    if ($var instanceof \ArrayObject || $var instanceof \ArrayIterator) {
                        $return->__STORAGE__ = self::export($var->getArrayCopy(), $maxDepth - 1);
                    }

                    foreach ($reflClass->getProperties() as $reflProperty) {
                        $name = $reflProperty->getName();

                        $reflProperty->setAccessible(true);
                        $return->$name = self::export($reflProperty->getValue($var), $maxDepth - 1);
                    }
                }
            } else {
                $return = $var;
            }
        } else {
            $return = is_object($var) ? get_class($var)
                : (is_array($var) ? 'Array(' . count($var) . ')' : $var);
        }

        return $return;
    }

    /**
* Returns a string representation of an object.
*
* @param object $obj
*
* @return string
*/
    public static function toString($obj)
    {
        return method_exists($obj, '__toString') ? (string) $obj : get_class($obj) . '@' . spl_object_hash($obj);
    }
}
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