--- /dev/null
+<?php
+/*
+ * This file is part of the Exporter package.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace SebastianBergmann\Exporter;
+
+use SebastianBergmann\RecursionContext\Context;
+
+/**
+ * A nifty utility for visualizing PHP variables.
+ *
+ * <code>
+ * <?php
+ * use SebastianBergmann\Exporter\Exporter;
+ *
+ * $exporter = new Exporter;
+ * print $exporter->export(new Exception);
+ * </code>
+ */
+class Exporter
+{
+ /**
+ * Exports a value as a string
+ *
+ * The output of this method is similar to the output of print_r(), but
+ * improved in various aspects:
+ *
+ * - NULL is rendered as "null" (instead of "")
+ * - TRUE is rendered as "true" (instead of "1")
+ * - FALSE is rendered as "false" (instead of "")
+ * - Strings are always quoted with single quotes
+ * - Carriage returns and newlines are normalized to \n
+ * - Recursion and repeated rendering is treated properly
+ *
+ * @param mixed $value
+ * @param int $indentation The indentation level of the 2nd+ line
+ * @return string
+ */
+ public function export($value, $indentation = 0)
+ {
+ return $this->recursiveExport($value, $indentation);
+ }
+
+ /**
+ * @param mixed $data
+ * @param Context $context
+ * @return string
+ */
+ public function shortenedRecursiveExport(&$data, Context $context = null)
+ {
+ $result = array();
+ $exporter = new self();
+
+ if (!$context) {
+ $context = new Context;
+ }
+
+ $context->add($data);
+
+ foreach ($data as $key => $value) {
+ if (is_array($value)) {
+ if ($context->contains($data[$key]) !== false) {
+ $result[] = '*RECURSION*';
+ }
+
+ else {
+ $result[] = sprintf(
+ 'array(%s)',
+ $this->shortenedRecursiveExport($data[$key], $context)
+ );
+ }
+ }
+
+ else {
+ $result[] = $exporter->shortenedExport($value);
+ }
+ }
+
+ return implode(', ', $result);
+ }
+
+ /**
+ * Exports a value into a single-line string
+ *
+ * The output of this method is similar to the output of
+ * SebastianBergmann\Exporter\Exporter::export().
+ *
+ * Newlines are replaced by the visible string '\n'.
+ * Contents of arrays and objects (if any) are replaced by '...'.
+ *
+ * @param mixed $value
+ * @return string
+ * @see SebastianBergmann\Exporter\Exporter::export
+ */
+ public function shortenedExport($value)
+ {
+ if (is_string($value)) {
+ $string = $this->export($value);
+
+ if (function_exists('mb_strlen')) {
+ if (mb_strlen($string) > 40) {
+ $string = mb_substr($string, 0, 30) . '...' . mb_substr($string, -7);
+ }
+ } else {
+ if (strlen($string) > 40) {
+ $string = substr($string, 0, 30) . '...' . substr($string, -7);
+ }
+ }
+
+ return str_replace("\n", '\n', $string);
+ }
+
+ if (is_object($value)) {
+ return sprintf(
+ '%s Object (%s)',
+ get_class($value),
+ count($this->toArray($value)) > 0 ? '...' : ''
+ );
+ }
+
+ if (is_array($value)) {
+ return sprintf(
+ 'Array (%s)',
+ count($value) > 0 ? '...' : ''
+ );
+ }
+
+ return $this->export($value);
+ }
+
+ /**
+ * Converts an object to an array containing all of its private, protected
+ * and public properties.
+ *
+ * @param mixed $value
+ * @return array
+ */
+ public function toArray($value)
+ {
+ if (!is_object($value)) {
+ return (array) $value;
+ }
+
+ $array = array();
+
+ foreach ((array) $value as $key => $val) {
+ // properties are transformed to keys in the following way:
+ // private $property => "\0Classname\0property"
+ // protected $property => "\0*\0property"
+ // public $property => "property"
+ if (preg_match('/^\0.+\0(.+)$/', $key, $matches)) {
+ $key = $matches[1];
+ }
+
+ // See https://github.com/php/php-src/commit/5721132
+ if ($key === "\0gcdata") {
+ continue;
+ }
+
+ $array[$key] = $val;
+ }
+
+ // Some internal classes like SplObjectStorage don't work with the
+ // above (fast) mechanism nor with reflection in Zend.
+ // Format the output similarly to print_r() in this case
+ if ($value instanceof \SplObjectStorage) {
+ // However, the fast method does work in HHVM, and exposes the
+ // internal implementation. Hide it again.
+ if (property_exists('\SplObjectStorage', '__storage')) {
+ unset($array['__storage']);
+ } elseif (property_exists('\SplObjectStorage', 'storage')) {
+ unset($array['storage']);
+ }
+
+ if (property_exists('\SplObjectStorage', '__key')) {
+ unset($array['__key']);
+ }
+
+ foreach ($value as $key => $val) {
+ $array[spl_object_hash($val)] = array(
+ 'obj' => $val,
+ 'inf' => $value->getInfo(),
+ );
+ }
+ }
+
+ return $array;
+ }
+
+ /**
+ * Recursive implementation of export
+ *
+ * @param mixed $value The value to export
+ * @param int $indentation The indentation level of the 2nd+ line
+ * @param \SebastianBergmann\RecursionContext\Context $processed Previously processed objects
+ * @return string
+ * @see SebastianBergmann\Exporter\Exporter::export
+ */
+ protected function recursiveExport(&$value, $indentation, $processed = null)
+ {
+ if ($value === null) {
+ return 'null';
+ }
+
+ if ($value === true) {
+ return 'true';
+ }
+
+ if ($value === false) {
+ return 'false';
+ }
+
+ if (is_float($value) && floatval(intval($value)) === $value) {
+ return "$value.0";
+ }
+
+ if (is_resource($value)) {
+ return sprintf(
+ 'resource(%d) of type (%s)',
+ $value,
+ get_resource_type($value)
+ );
+ }
+
+ if (is_string($value)) {
+ // Match for most non printable chars somewhat taking multibyte chars into account
+ if (preg_match('/[^\x09-\x0d\x1b\x20-\xff]/', $value)) {
+ return 'Binary String: 0x' . bin2hex($value);
+ }
+
+ return "'" .
+ str_replace(array("\r\n", "\n\r", "\r"), array("\n", "\n", "\n"), $value) .
+ "'";
+ }
+
+ $whitespace = str_repeat(' ', 4 * $indentation);
+
+ if (!$processed) {
+ $processed = new Context;
+ }
+
+ if (is_array($value)) {
+ if (($key = $processed->contains($value)) !== false) {
+ return 'Array &' . $key;
+ }
+
+ $key = $processed->add($value);
+ $values = '';
+
+ if (count($value) > 0) {
+ foreach ($value as $k => $v) {
+ $values .= sprintf(
+ '%s %s => %s' . "\n",
+ $whitespace,
+ $this->recursiveExport($k, $indentation),
+ $this->recursiveExport($value[$k], $indentation + 1, $processed)
+ );
+ }
+
+ $values = "\n" . $values . $whitespace;
+ }
+
+ return sprintf('Array &%s (%s)', $key, $values);
+ }
+
+ if (is_object($value)) {
+ $class = get_class($value);
+
+ if ($hash = $processed->contains($value)) {
+ return sprintf('%s Object &%s', $class, $hash);
+ }
+
+ $hash = $processed->add($value);
+ $values = '';
+ $array = $this->toArray($value);
+
+ if (count($array) > 0) {
+ foreach ($array as $k => $v) {
+ $values .= sprintf(
+ '%s %s => %s' . "\n",
+ $whitespace,
+ $this->recursiveExport($k, $indentation),
+ $this->recursiveExport($v, $indentation + 1, $processed)
+ );
+ }
+
+ $values = "\n" . $values . $whitespace;
+ }
+
+ return sprintf('%s Object &%s (%s)', $class, $hash, $values);
+ }
+
+ return var_export($value, true);
+ }
+}
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