<?php declare(strict_types=1);
/*
* This file is part of sebastian/exporter.
*
* (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 function bin2hex;
use function count;
use function function_exists;
use function get_class;
use function get_resource_type;
use function gettype;
use function implode;
use function ini_get;
use function ini_set;
use function is_array;
use function is_float;
use function is_object;
use function is_resource;
use function is_string;
use function mb_strlen;
use function mb_substr;
use function preg_match;
use function spl_object_hash;
use function sprintf;
use function str_repeat;
use function str_replace;
use function strlen;
use function substr;
use function var_export;
use SebastianBergmann\RecursionContext\Context;
use SplObjectStorage;
/**
* 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 int $indentation The indentation level of the 2nd+ line
*
* @return string
*/
public function export($value, $indentation = 0)
{
return $this->recursiveExport($value, $indentation);
}
/**
* @param array<mixed> $data
* @param Context $context
*
* @return string
*/
public function shortenedRecursiveExport(&$data, ?Context $context = null)
{
$result = [];
$exporter = new self();
if (!$context) {
$context = new Context;
}
$array = $data;
$context->add($data);
foreach ($array 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(', ', $result);
}
/**
* Exports a value into a single-line string.
*
* The output of this method is similar to the output of
* SebastianBergmann\Exporter\Exporter::export().
*
* Newlines are replaced by the visible string '\n'.
* Contents of arrays and objects (if any) are replaced by '...'.
*
* @return string
*
* @see SebastianBergmann\Exporter\Exporter::export
*/
public function shortenedExport($value)
{
if (is_string($value)) {
$string = str_replace("\n", '', $this->export($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 $string;
}
if (is_object($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.
*
* @return array
*/
public function toArray($value)
{
if (!is_object($value)) {
return (array) $value;
}
$array = [];
foreach ((array) $value as $key => $val) {
// Exception traces commonly reference hundreds to thousands of
// objects currently loaded in memory. Including them in the result
// has a severe negative performance impact.
if ("\0Error\0trace" === $key || "\0Exception\0trace" === $key) {
continue;
}
// properties are transformed to keys in the following way:
// private $property => "\0Classname\0property"
// protected $property => "\0*\0property"
// public $property => "property"
if (preg_match('/^\0.+\0(.+)$/', (string) $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) {
foreach ($value as $key => $val) {
$array[spl_object_hash($val)] = [
'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)) {
$precisionBackup = ini_get('precision');
ini_set('precision', '-1');
try {
$valueStr = (string) $value;
if ((string) (int) $value === $valueStr) {
return $valueStr . '.0';
}
return $valueStr;
} finally {
ini_set('precision', $precisionBackup);
}
}
if (gettype($value) === 'resource (closed)') {
return 'resource (closed)';
}
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(
'<lf>',
"\n",
str_replace(
["\r\n", "\n\r", "\r", "\n"],
['\r\n<lf>', '\n\r<lf>', '\r<lf>', '\n<lf>'],
$value
)
) .
"'";
}
$whitespace = str_repeat(' ', 4 * $indentation);
if (!$processed) {
$processed = new Context;
}
if (is_array($value)) {
if (($key = $processed->contains($value)) !== false) {
return 'Array &' . $key;
}
$array = $value;
$key = $processed->add($value);
$values = '';
if (count($array) > 0) {
foreach ($array 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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In the digital age, privacy concerns have become increasingly paramount, prompting the European Union to enact the General Data Protection Regulation (GDPR) in 2018. Among its many provisions, GDPR sets strict guidelines for the collection and processing of personal data, including the use of cookies on websites. Privacy Policy
