src/AppBundle/Common/ExceptionPrintingToolkit.php

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<?php

namespace AppBundle\Common;

use Symfony\Component\Debug\Exception\FlattenException;

class ExceptionPrintingToolkit
{
    public static function printTraceAsArray($exception)
    {
        if (!$exception instanceof FlattenException) {
            $exception = FlattenException::create($exception);
        }

        $error['previous'] = array();

        $flags = PHP_VERSION_ID >= 50400 ? ENT_QUOTES | ENT_SUBSTITUTE : ENT_QUOTES;

        $count = count($exception->getAllPrevious());
        $total = $count + 1;
        foreach ($exception->toArray() as $position => $e) {
            $previous = array();

            $ind = $count - $position + 1;

            $previous['message'] = "{$ind}/{$total} {$e['class']}: {$e['message']}";
            $previous['trace'] = array();

            foreach ($e['trace'] as $pos => $trace) {
                $content = sprintf('%s. ', $pos + 1);
                if ($trace['function']) {
                    $content .= sprintf('at %s%s%s(%s)', $trace['class'], $trace['type'], $trace['function'], '...args...');
                }
                if (isset($trace['file']) && isset($trace['line'])) {
                    $content .= sprintf(' in %s line %d', htmlspecialchars($trace['file'], $flags, 'UTF-8'), $trace['line']);
                }

                $previous['trace'][] = $content;
            }

            $error['previous'][] = $previous;
        }

        return $error;
    }
}