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c3c2976 Jun 26, 2013
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@ccampbell @tesdevuk
executable file 447 lines (384 sloc) 10.3 KB
<?php
/**
* Copyright 2010-2013 Craig Campbell
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Server Side Chrome PHP debugger class
*
* @package ChromePhp
* @author Craig Campbell <iamcraigcampbell@gmail.com>
*/
class ChromePhp
{
/**
* @var string
*/
const VERSION = '4.1.0';
/**
* @var string
*/
const HEADER_NAME = 'X-ChromeLogger-Data';
/**
* @var string
*/
const BACKTRACE_LEVEL = 'backtrace_level';
/**
* @var string
*/
const LOG = 'log';
/**
* @var string
*/
const WARN = 'warn';
/**
* @var string
*/
const ERROR = 'error';
/**
* @var string
*/
const GROUP = 'group';
/**
* @var string
*/
const INFO = 'info';
/**
* @var string
*/
const GROUP_END = 'groupEnd';
/**
* @var string
*/
const GROUP_COLLAPSED = 'groupCollapsed';
/**
* @var string
*/
const TABLE = 'table';
/**
* @var string
*/
protected $_php_version;
/**
* @var int
*/
protected $_timestamp;
/**
* @var array
*/
protected $_json = array(
'version' => self::VERSION,
'columns' => array('log', 'backtrace', 'type'),
'rows' => array()
);
/**
* @var array
*/
protected $_backtraces = array();
/**
* @var bool
*/
protected $_error_triggered = false;
/**
* @var array
*/
protected $_settings = array(
self::BACKTRACE_LEVEL => 1
);
/**
* @var ChromePhp
*/
protected static $_instance;
/**
* Prevent recursion when working with objects referring to each other
*
* @var array
*/
protected $_processed = array();
/**
* constructor
*/
private function __construct()
{
$this->_php_version = phpversion();
$this->_timestamp = $this->_php_version >= 5.1 ? $_SERVER['REQUEST_TIME'] : time();
$this->_json['request_uri'] = $_SERVER['REQUEST_URI'];
}
/**
* gets instance of this class
*
* @return ChromePhp
*/
public static function getInstance()
{
if (self::$_instance === null) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* logs a variable to the console
*
* @param mixed $data,... unlimited OPTIONAL number of additional logs [...]
* @return void
*/
public static function log()
{
$args = func_get_args();
return self::_log('', $args);
}
/**
* logs a warning to the console
*
* @param mixed $data,... unlimited OPTIONAL number of additional logs [...]
* @return void
*/
public static function warn()
{
$args = func_get_args();
return self::_log(self::WARN, $args);
}
/**
* logs an error to the console
*
* @param mixed $data,... unlimited OPTIONAL number of additional logs [...]
* @return void
*/
public static function error()
{
$args = func_get_args();
return self::_log(self::ERROR, $args);
}
/**
* sends a group log
*
* @param string value
*/
public static function group()
{
$args = func_get_args();
return self::_log(self::GROUP, $args);
}
/**
* sends an info log
*
* @param mixed $data,... unlimited OPTIONAL number of additional logs [...]
* @return void
*/
public static function info()
{
$args = func_get_args();
return self::_log(self::INFO, $args);
}
/**
* sends a collapsed group log
*
* @param string value
*/
public static function groupCollapsed()
{
$args = func_get_args();
return self::_log(self::GROUP_COLLAPSED, $args);
}
/**
* ends a group log
*
* @param string value
*/
public static function groupEnd()
{
$args = func_get_args();
return self::_log(self::GROUP_END, $args);
}
/**
* sends a table log
*
* @param string value
*/
public static function table()
{
$args = func_get_args();
return self::_log(self::TABLE, $args);
}
/**
* internal logging call
*
* @param string $type
* @return void
*/
protected static function _log($type, array $args)
{
// nothing passed in, don't do anything
if (count($args) == 0 && $type != self::GROUP_END) {
return;
}
$logger = self::getInstance();
$logger->_processed = array();
$logs = array();
foreach ($args as $arg) {
$logs[] = $logger->_convert($arg);
}
$backtrace = debug_backtrace(false);
$level = $logger->getSetting(self::BACKTRACE_LEVEL);
$backtrace_message = 'unknown';
if (isset($backtrace[$level]['file']) && isset($backtrace[$level]['line'])) {
$backtrace_message = $backtrace[$level]['file'] . ' : ' . $backtrace[$level]['line'];
}
$logger->_addRow($logs, $backtrace_message, $type);
}
/**
* converts an object to a better format for logging
*
* @param Object
* @return array
*/
protected function _convert($object)
{
// if this isn't an object then just return it
if (!is_object($object)) {
return $object;
}
//Mark this object as processed so we don't convert it twice and it
//Also avoid recursion when objects refer to each other
$this->_processed[] = $object;
$object_as_array = array();
// first add the class name
$object_as_array['___class_name'] = get_class($object);
// loop through object vars
$object_vars = get_object_vars($object);
foreach ($object_vars as $key => $value) {
// same instance as parent object
if ($value === $object || in_array($value, $this->_processed, true)) {
$value = 'recursion - parent object [' . get_class($value) . ']';
}
$object_as_array[$key] = $this->_convert($value);
}
$reflection = new ReflectionClass($object);
// loop through the properties and add those
foreach ($reflection->getProperties() as $property) {
// if one of these properties was already added above then ignore it
if (array_key_exists($property->getName(), $object_vars)) {
continue;
}
$type = $this->_getPropertyKey($property);
if ($this->_php_version >= 5.3) {
$property->setAccessible(true);
}
try {
$value = $property->getValue($object);
} catch (ReflectionException $e) {
$value = 'only PHP 5.3 can access private/protected properties';
}
// same instance as parent object
if ($value === $object || in_array($value, $this->_processed, true)) {
$value = 'recursion - parent object [' . get_class($value) . ']';
}
$object_as_array[$type] = $this->_convert($value);
}
return $object_as_array;
}
/**
* takes a reflection property and returns a nicely formatted key of the property name
*
* @param ReflectionProperty
* @return string
*/
protected function _getPropertyKey(ReflectionProperty $property)
{
$static = $property->isStatic() ? ' static' : '';
if ($property->isPublic()) {
return 'public' . $static . ' ' . $property->getName();
}
if ($property->isProtected()) {
return 'protected' . $static . ' ' . $property->getName();
}
if ($property->isPrivate()) {
return 'private' . $static . ' ' . $property->getName();
}
}
/**
* adds a value to the data array
*
* @var mixed
* @return void
*/
protected function _addRow(array $logs, $backtrace, $type)
{
// if this is logged on the same line for example in a loop, set it to null to save space
if (in_array($backtrace, $this->_backtraces)) {
$backtrace = null;
}
// for group, groupEnd, and groupCollapsed
// take out the backtrace since it is not useful
if ($type == self::GROUP || $type == self::GROUP_END || $type == self::GROUP_COLLAPSED) {
$backtrace = null;
}
if ($backtrace !== null) {
$this->_backtraces[] = $backtrace;
}
$row = array($logs, $backtrace, $type);
$this->_json['rows'][] = $row;
$this->_writeHeader($this->_json);
}
protected function _writeHeader($data)
{
header(self::HEADER_NAME . ': ' . $this->_encode($data));
}
/**
* encodes the data to be sent along with the request
*
* @param array $data
* @return string
*/
protected function _encode($data)
{
return base64_encode(utf8_encode(json_encode($data)));
}
/**
* adds a setting
*
* @param string key
* @param mixed value
* @return void
*/
public function addSetting($key, $value)
{
$this->_settings[$key] = $value;
}
/**
* add ability to set multiple settings in one call
*
* @param array $settings
* @return void
*/
public function addSettings(array $settings)
{
foreach ($settings as $key => $value) {
$this->addSetting($key, $value);
}
}
/**
* gets a setting
*
* @param string key
* @return mixed
*/
public function getSetting($key)
{
if (!isset($this->_settings[$key])) {
return null;
}
return $this->_settings[$key];
}
}