--- /dev/null
+<?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\Yaml;
+
+/**
+ * Dumper dumps PHP variables to YAML strings.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Dumper
+{
+ /**
+ * The amount of spaces to use for indentation of nested nodes.
+ *
+ * @var int
+ */
+ protected $indentation = 4;
+
+ /**
+ * Sets the indentation.
+ *
+ * @param int $num The amount of spaces to use for indentation of nested nodes
+ */
+ public function setIndentation($num)
+ {
+ if ($num < 1) {
+ throw new \InvalidArgumentException('The indentation must be greater than zero.');
+ }
+
+ $this->indentation = (int) $num;
+ }
+
+ /**
+ * Dumps a PHP value to YAML.
+ *
+ * @param mixed $input The PHP value
+ * @param int $inline The level where you switch to inline YAML
+ * @param int $indent The level of indentation (used internally)
+ * @param bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
+ * @param bool $objectSupport true if object support is enabled, false otherwise
+ *
+ * @return string The YAML representation of the PHP value
+ */
+ public function dump($input, $inline = 0, $indent = 0, $exceptionOnInvalidType = false, $objectSupport = false)
+ {
+ $output = '';
+ $prefix = $indent ? str_repeat(' ', $indent) : '';
+
+ if ($inline <= 0 || !is_array($input) || empty($input)) {
+ $output .= $prefix.Inline::dump($input, $exceptionOnInvalidType, $objectSupport);
+ } else {
+ $isAHash = Inline::isHash($input);
+
+ foreach ($input as $key => $value) {
+ $willBeInlined = $inline - 1 <= 0 || !is_array($value) || empty($value);
+
+ $output .= sprintf('%s%s%s%s',
+ $prefix,
+ $isAHash ? Inline::dump($key, $exceptionOnInvalidType, $objectSupport).':' : '-',
+ $willBeInlined ? ' ' : "\n",
+ $this->dump($value, $inline - 1, $willBeInlined ? 0 : $indent + $this->indentation, $exceptionOnInvalidType, $objectSupport)
+ ).($willBeInlined ? "\n" : '');
+ }
+ }
+
+ return $output;
+ }
+}