Logger::flush() - Code Metrics - Inspection of "Added Logging of memory usage" - yiisoft/yii2 - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — travis ( 338e59 )

by Carsten

created 2017-01-02 01:35 UTC

Logger::flush() A

↳ Parent: Logger

Complexity

Conditions	2
Paths	2

Size

Total Lines	10
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	10
rs	9.4285
c	0
b	0
f	0
ccs	7
cts	7
cp	1
cc	2
eloc	5
nc	2
nop	1
crap	2

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\log;

use Yii;
use yii\base\Component;

/**
 * Logger records logged messages in memory and sends them to different targets if [[dispatcher]] is set.
 *
 * A Logger instance can be accessed via `Yii::getLogger()`. You can call the method [[log()]] to record a single log message.
 * For convenience, a set of shortcut methods are provided for logging messages of various severity levels
 * via the [[Yii]] class:
 *
 * - [[Yii::trace()]]
 * - [[Yii::error()]]
 * - [[Yii::warning()]]
 * - [[Yii::info()]]
 * - [[Yii::beginProfile()]]
 * - [[Yii::endProfile()]]
 *
 * For more details and usage information on Logger, see the [guide article on logging](guide:runtime-logging).
 *
 * When the application ends or [[flushInterval]] is reached, Logger will call [[flush()]]
 * to send logged messages to different log targets, such as [[FileTarget|file]], [[EmailTarget|email]],
 * or [[DbTarget|database]], with the help of the [[dispatcher]].
 *
 * @property array $dbProfiling The first element indicates the number of SQL statements executed, and the
 * second element the total time spent in SQL execution. This property is read-only.
 * @property float $elapsedTime The total elapsed time in seconds for current request. This property is
 * read-only.
 * @property array $profiling The profiling results. Each element is an array consisting of these elements:
 * `info`, `category`, `timestamp`, `trace`, `level`, `duration`, `memory`, `memoryDiff`. This property is read-only.
 *
 * @author Qiang Xue <[email protected]>
 * @since 2.0
 */
class Logger extends Component
{
    /**
     * Error message level. An error message is one that indicates the abnormal termination of the
     * application and may require developer's handling.
     */
    const LEVEL_ERROR = 0x01;
    /**
     * Warning message level. A warning message is one that indicates some abnormal happens but
     * the application is able to continue to run. Developers should pay attention to this message.
     */
    const LEVEL_WARNING = 0x02;
    /**
     * Informational message level. An informational message is one that includes certain information
     * for developers to review.
     */
    const LEVEL_INFO = 0x04;
    /**
     * Tracing message level. An tracing message is one that reveals the code execution flow.
     */
    const LEVEL_TRACE = 0x08;
    /**
     * Profiling message level. This indicates the message is for profiling purpose.
     */
    const LEVEL_PROFILE = 0x40;
    /**
     * Profiling message level. This indicates the message is for profiling purpose. It marks the
     * beginning of a profiling block.
     */
    const LEVEL_PROFILE_BEGIN = 0x50;
    /**
     * Profiling message level. This indicates the message is for profiling purpose. It marks the
     * end of a profiling block.
     */
    const LEVEL_PROFILE_END = 0x60;

    /**
     * @var array logged messages. This property is managed by [[log()]] and [[flush()]].
     * Each log message is of the following structure:
     *
     * ```
     * [
     *   [0] => message (mixed, can be a string or some complex data, such as an exception object)
     *   [1] => level (integer)
     *   [2] => category (string)
     *   [3] => timestamp (float, obtained by microtime(true))
     *   [4] => traces (array, debug backtrace, contains the application code call stacks)
     *   [5] => memory usage in bytes (int, obtained by memory_get_usage()), available since version 2.0.11.
     * ]
     * ```
     */
    public $messages = [];
    /**
     * @var int how many messages should be logged before they are flushed from memory and sent to targets.
     * Defaults to 1000, meaning the [[flush]] method will be invoked once every 1000 messages logged.
     * Set this property to be 0 if you don't want to flush messages until the application terminates.
     * This property mainly affects how much memory will be taken by the logged messages.
     * A smaller value means less memory, but will increase the execution time due to the overhead of [[flush()]].
     */
    public $flushInterval = 1000;
    /**
     * @var int how much call stack information (file name and line number) should be logged for each message.
     * If it is greater than 0, at most that number of call stacks will be logged. Note that only application
     * call stacks are counted.
     */
    public $traceLevel = 0;
    /**
     * @var Dispatcher the message dispatcher
     */
    public $dispatcher;


    /**
     * Initializes the logger by registering [[flush()]] as a shutdown function.
     */
    public function init()
    {
        parent::init();
        register_shutdown_function(function () {
            // make regular flush before other shutdown functions, which allows session data collection and so on
            $this->flush();
            // make sure log entries written by shutdown functions are also flushed
            // ensure "flush()" is called last when there are multiple shutdown functions
            register_shutdown_function([$this, 'flush'], true);
        });
    }

    /**
     * Logs a message with the given type and category.
     * If [[traceLevel]] is greater than 0, additional call stack information about
     * the application code will be logged as well.
     * @param string|array $message the message to be logged. This can be a simple string or a more
     * complex data structure that will be handled by a [[Target|log target]].
     * @param int $level the level of the message. This must be one of the following:
     * `Logger::LEVEL_ERROR`, `Logger::LEVEL_WARNING`, `Logger::LEVEL_INFO`, `Logger::LEVEL_TRACE`,
     * `Logger::LEVEL_PROFILE_BEGIN`, `Logger::LEVEL_PROFILE_END`.
     * @param string $category the category of the message.
     */
    public function log($message, $level, $category = 'application')
    {
        $time = microtime(true);
        $traces = [];
        if ($this->traceLevel > 0) {
            $count = 0;
            $ts = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
            array_pop($ts); // remove the last trace since it would be the entry script, not very useful
            foreach ($ts as $trace) {
                if (isset($trace['file'], $trace['line']) && strpos($trace['file'], YII2_PATH) !== 0) {
                    unset($trace['object'], $trace['args']);
                    $traces[] = $trace;
                    if (++$count >= $this->traceLevel) {
                        break;
                    }
                }
            }
        }
        $this->messages[] = [$message, $level, $category, $time, $traces, memory_get_usage()];
        if ($this->flushInterval > 0 && count($this->messages) >= $this->flushInterval) {
            $this->flush();
        }
    }

    /**
     * Flushes log messages from memory to targets.
     * @param bool $final whether this is a final call during a request.
     */
    public function flush($final = false)
    {
        $messages = $this->messages;
        // https://github.com/yiisoft/yii2/issues/5619
        // new messages could be logged while the existing ones are being handled by targets
        $this->messages = [];
        if ($this->dispatcher instanceof Dispatcher) {
            $this->dispatcher->dispatch($messages, $final);
        }
    }

    /**
     * Returns the total elapsed time since the start of the current request.
     * This method calculates the difference between now and the timestamp
     * defined by constant `YII_BEGIN_TIME` which is evaluated at the beginning
     * of [[\yii\BaseYii]] class file.
     * @return float the total elapsed time in seconds for current request.
     */
    public function getElapsedTime()
    {
        return microtime(true) - YII_BEGIN_TIME;
    }

    /**
     * Returns the profiling results.
     *
     * By default, all profiling results will be returned. You may provide
     * `$categories` and `$excludeCategories` as parameters to retrieve the
     * results that you are interested in.
     *
     * @param array $categories list of categories that you are interested in.
     * You can use an asterisk at the end of a category to do a prefix match.
     * For example, 'yii\db\*' will match categories starting with 'yii\db\',
     * such as 'yii\db\Connection'.
     * @param array $excludeCategories list of categories that you want to exclude
     * @return array the profiling results. Each element is an array consisting of these elements:
     * `info`, `category`, `timestamp`, `trace`, `level`, `duration`, `memory`, `memoryDiff`.
     * The `memory` and `memoryDiff` values are available since version 2.0.11.
     */
    public function getProfiling($categories = [], $excludeCategories = [])
    {
        $timings = $this->calculateTimings($this->messages);
        if (empty($categories) && empty($excludeCategories)) {
            return $timings;
        }

        foreach ($timings as $i => $timing) {
            $matched = empty($categories);
            foreach ($categories as $category) {
                $prefix = rtrim($category, '*');
                if (($timing['category'] === $category || $prefix !== $category) && strpos($timing['category'], $prefix) === 0) {
                    $matched = true;
                    break;
                }
            }

            if ($matched) {
                foreach ($excludeCategories as $category) {
                    $prefix = rtrim($category, '*');
                    foreach ($timings as $i => $timing) {
                        if (($timing['category'] === $category || $prefix !== $category) && strpos($timing['category'], $prefix) === 0) {
                            $matched = false;
                            break;
                        }
                    }
                }
            }

            if (!$matched) {
                unset($timings[$i]);
            }
        }

        return array_values($timings);
    }

    /**
     * Returns the statistical results of DB queries.
     * The results returned include the number of SQL statements executed and
     * the total time spent.
     * @return array the first element indicates the number of SQL statements executed,
     * and the second element the total time spent in SQL execution.
     */
    public function getDbProfiling()
    {
        $timings = $this->getProfiling(['yii\db\Command::query', 'yii\db\Command::execute']);
        $count = count($timings);
        $time = 0;
        foreach ($timings as $timing) {
            $time += $timing['duration'];
        }

        return [$count, $time];
    }

    /**
     * Calculates the elapsed time for the given log messages.
     * @param array $messages the log messages obtained from profiling
     * @return array timings. Each element is an array consisting of these elements:
     * `info`, `category`, `timestamp`, `trace`, `level`, `duration`, `memory`, `memoryDiff`.
     * The `memory` and `memoryDiff` values are available since version 2.0.11.
     */
    public function calculateTimings($messages)
    {
        $timings = [];
        $stack = [];

        foreach ($messages as $i => $log) {
            list($token, $level, $category, $timestamp, $traces) = $log;
<?php

function returnThreeValues() {
    return array('a', 'b', 'c');
}

list($a, $b, $c) = returnThreeValues();

print $a . " - " . $c;
            $memory = isset($log[5]) ? $log[5] : 0;
            $log[6] = $i;
            if ($level == Logger::LEVEL_PROFILE_BEGIN) {
                $stack[] = $log;
            } elseif ($level == Logger::LEVEL_PROFILE_END) {
                if (($last = array_pop($stack)) !== null && $last[0] === $token) {
                    $timings[$last[6]] = [
                        'info' => $last[0],
                        'category' => $last[2],
                        'timestamp' => $last[3],
                        'trace' => $last[4],
                        'level' => count($stack),
                        'duration' => $timestamp - $last[3],
                        'memory' => $memory,
                        'memoryDiff' => $memory - (isset($last[5]) ? $last[5] : 0),
                    ];
                }
            }
        }

        ksort($timings);

        return array_values($timings);
    }


    /**
     * Returns the text display of the specified level.
     * @param int $level the message level, e.g. [[LEVEL_ERROR]], [[LEVEL_WARNING]].
     * @return string the text display of the level
     */
    public static function getLevelName($level)
    {
        static $levels = [
            self::LEVEL_ERROR => 'error',
            self::LEVEL_WARNING => 'warning',
            self::LEVEL_INFO => 'info',
            self::LEVEL_TRACE => 'trace',
            self::LEVEL_PROFILE_BEGIN => 'profile begin',
            self::LEVEL_PROFILE_END => 'profile end',
            self::LEVEL_PROFILE => 'profile'
        ];

        return isset($levels[$level]) ? $levels[$level] : 'unknown';
    }
}


1		<?php
2		/**
3		* @link http://www.yiiframework.com/
4		* @copyright Copyright (c) 2008 Yii Software LLC
5		* @license http://www.yiiframework.com/license/
6		*/
7
8		namespace yii\log;
9
10		use Yii;
11		use yii\base\Component;
12
13		/**
14		* Logger records logged messages in memory and sends them to different targets if [[dispatcher]] is set.
15		*
16		* A Logger instance can be accessed via `Yii::getLogger()`. You can call the method [[log()]] to record a single log message.
17		* For convenience, a set of shortcut methods are provided for logging messages of various severity levels
18		* via the [[Yii]] class:
19		*
20		* - [[Yii::trace()]]
21		* - [[Yii::error()]]
22		* - [[Yii::warning()]]
23		* - [[Yii::info()]]
24		* - [[Yii::beginProfile()]]
25		* - [[Yii::endProfile()]]
26		*
27		* For more details and usage information on Logger, see the [guide article on logging](guide:runtime-logging).
28		*
29		* When the application ends or [[flushInterval]] is reached, Logger will call [[flush()]]
30		* to send logged messages to different log targets, such as [[FileTarget\|file]], [[EmailTarget\|email]],
31		* or [[DbTarget\|database]], with the help of the [[dispatcher]].
32		*
33		* @property array $dbProfiling The first element indicates the number of SQL statements executed, and the
34		* second element the total time spent in SQL execution. This property is read-only.
35		* @property float $elapsedTime The total elapsed time in seconds for current request. This property is
36		* read-only.
37		* @property array $profiling The profiling results. Each element is an array consisting of these elements:
38		* `info`, `category`, `timestamp`, `trace`, `level`, `duration`, `memory`, `memoryDiff`. This property is read-only.
39		*
40		* @author Qiang Xue <[email protected]>
41		* @since 2.0
42		*/
43		class Logger extends Component
44		{
45		/**
46		* Error message level. An error message is one that indicates the abnormal termination of the
47		* application and may require developer's handling.
48		*/
49		const LEVEL_ERROR = 0x01;
50		/**
51		* Warning message level. A warning message is one that indicates some abnormal happens but
52		* the application is able to continue to run. Developers should pay attention to this message.
53		*/
54		const LEVEL_WARNING = 0x02;
55		/**
56		* Informational message level. An informational message is one that includes certain information
57		* for developers to review.
58		*/
59		const LEVEL_INFO = 0x04;
60		/**
61		* Tracing message level. An tracing message is one that reveals the code execution flow.
62		*/
63		const LEVEL_TRACE = 0x08;
64		/**
65		* Profiling message level. This indicates the message is for profiling purpose.
66		*/
67		const LEVEL_PROFILE = 0x40;
68		/**
69		* Profiling message level. This indicates the message is for profiling purpose. It marks the
70		* beginning of a profiling block.
71		*/
72		const LEVEL_PROFILE_BEGIN = 0x50;
73		/**
74		* Profiling message level. This indicates the message is for profiling purpose. It marks the
75		* end of a profiling block.
76		*/
77		const LEVEL_PROFILE_END = 0x60;
78
79		/**
80		* @var array logged messages. This property is managed by [[log()]] and [[flush()]].
81		* Each log message is of the following structure:
82		*
83		* ```
84		* [
85		* [0] => message (mixed, can be a string or some complex data, such as an exception object)
86		* [1] => level (integer)
87		* [2] => category (string)
88		* [3] => timestamp (float, obtained by microtime(true))
89		* [4] => traces (array, debug backtrace, contains the application code call stacks)
90		* [5] => memory usage in bytes (int, obtained by memory_get_usage()), available since version 2.0.11.
91		* ]
92		* ```
93		*/
94		public $messages = [];
95		/**
96		* @var int how many messages should be logged before they are flushed from memory and sent to targets.
97		* Defaults to 1000, meaning the [[flush]] method will be invoked once every 1000 messages logged.
98		* Set this property to be 0 if you don't want to flush messages until the application terminates.
99		* This property mainly affects how much memory will be taken by the logged messages.
100		* A smaller value means less memory, but will increase the execution time due to the overhead of [[flush()]].
101		*/
102		public $flushInterval = 1000;
103		/**
104		* @var int how much call stack information (file name and line number) should be logged for each message.
105		* If it is greater than 0, at most that number of call stacks will be logged. Note that only application
106		* call stacks are counted.
107		*/
108		public $traceLevel = 0;
109		/**
110		* @var Dispatcher the message dispatcher
111		*/
112		public $dispatcher;
113
114
115		/**
116		* Initializes the logger by registering [[flush()]] as a shutdown function.
117		*/
118	22	public function init()
119		{
120	22	parent::init();
121	22	register_shutdown_function(function () {
122		// make regular flush before other shutdown functions, which allows session data collection and so on
123		$this->flush();
124		// make sure log entries written by shutdown functions are also flushed
125		// ensure "flush()" is called last when there are multiple shutdown functions
126		register_shutdown_function([$this, 'flush'], true);
127	22	});
128	22	}
129
130		/**
131		* Logs a message with the given type and category.
132		* If [[traceLevel]] is greater than 0, additional call stack information about
133		* the application code will be logged as well.
134		* @param string\|array $message the message to be logged. This can be a simple string or a more
135		* complex data structure that will be handled by a [[Target\|log target]].
136		* @param int $level the level of the message. This must be one of the following:
137		* `Logger::LEVEL_ERROR`, `Logger::LEVEL_WARNING`, `Logger::LEVEL_INFO`, `Logger::LEVEL_TRACE`,
138		* `Logger::LEVEL_PROFILE_BEGIN`, `Logger::LEVEL_PROFILE_END`.
139		* @param string $category the category of the message.
140		*/
141	982	public function log($message, $level, $category = 'application')
142		{
143	982	$time = microtime(true);
144	982	$traces = [];
145	982	if ($this->traceLevel > 0) {
146	1	$count = 0;
147	1	$ts = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
148	1	array_pop($ts); // remove the last trace since it would be the entry script, not very useful
149	1	foreach ($ts as $trace) {
150	1	if (isset($trace['file'], $trace['line']) && strpos($trace['file'], YII2_PATH) !== 0) {
151	1	unset($trace['object'], $trace['args']);
152	1	$traces[] = $trace;
153	1	if (++$count >= $this->traceLevel) {
154	1	break;
155		}
156	1	}
157	1	}
158	1	}
159	982	$this->messages[] = [$message, $level, $category, $time, $traces, memory_get_usage()];
160	982	if ($this->flushInterval > 0 && count($this->messages) >= $this->flushInterval) {
161	51	$this->flush();
162	51	}
163	982	}
164
165		/**
166		* Flushes log messages from memory to targets.
167		* @param bool $final whether this is a final call during a request.
168		*/
169	56	public function flush($final = false)
170		{
171	56	$messages = $this->messages;
172		// https://github.com/yiisoft/yii2/issues/5619
173		// new messages could be logged while the existing ones are being handled by targets
174	56	$this->messages = [];
175	56	if ($this->dispatcher instanceof Dispatcher) {
176	55	$this->dispatcher->dispatch($messages, $final);
177	55	}
178	56	}
179
180		/**
181		* Returns the total elapsed time since the start of the current request.
182		* This method calculates the difference between now and the timestamp
183		* defined by constant `YII_BEGIN_TIME` which is evaluated at the beginning
184		* of [[\yii\BaseYii]] class file.
185		* @return float the total elapsed time in seconds for current request.
186		*/
187	1	public function getElapsedTime()
188		{
189	1	return microtime(true) - YII_BEGIN_TIME;
190		}
191
192		/**
193		* Returns the profiling results.
194		*
195		* By default, all profiling results will be returned. You may provide
196		* `$categories` and `$excludeCategories` as parameters to retrieve the
197		* results that you are interested in.
198		*
199		* @param array $categories list of categories that you are interested in.
200		* You can use an asterisk at the end of a category to do a prefix match.
201		* For example, 'yii\db\*' will match categories starting with 'yii\db\',
202		* such as 'yii\db\Connection'.
203		* @param array $excludeCategories list of categories that you want to exclude
204		* @return array the profiling results. Each element is an array consisting of these elements:
205		* `info`, `category`, `timestamp`, `trace`, `level`, `duration`, `memory`, `memoryDiff`.
206		* The `memory` and `memoryDiff` values are available since version 2.0.11.
207		*/
208	4	public function getProfiling($categories = [], $excludeCategories = [])
209		{
210	4	$timings = $this->calculateTimings($this->messages);
211	4	if (empty($categories) && empty($excludeCategories)) {
212	1	return $timings;
213		}
214
215	3	foreach ($timings as $i => $timing) {
216	3	$matched = empty($categories);
217	3	foreach ($categories as $category) {
218	3	$prefix = rtrim($category, '*');
219	3	if (($timing['category'] === $category \|\| $prefix !== $category) && strpos($timing['category'], $prefix) === 0) {
220	2	$matched = true;
221	2	break;
222		}
223	3	}
224
225	3	if ($matched) {
226	2	foreach ($excludeCategories as $category) {
227	1	$prefix = rtrim($category, '*');
228	1	foreach ($timings as $i => $timing) {
229	1	if (($timing['category'] === $category \|\| $prefix !== $category) && strpos($timing['category'], $prefix) === 0) {
230	1	$matched = false;
231	1	break;
232		}
233	1	}
234	2	}
235	2	}
236
237	3	if (!$matched) {
238	3	unset($timings[$i]);
239	3	}
240	3	}
241
242	3	return array_values($timings);
243		}
244
245		/**
246		* Returns the statistical results of DB queries.
247		* The results returned include the number of SQL statements executed and
248		* the total time spent.
249		* @return array the first element indicates the number of SQL statements executed,
250		* and the second element the total time spent in SQL execution.
251		*/
252	1	public function getDbProfiling()
253		{
254	1	$timings = $this->getProfiling(['yii\db\Command::query', 'yii\db\Command::execute']);
255	1	$count = count($timings);
256	1	$time = 0;
257	1	foreach ($timings as $timing) {
258	1	$time += $timing['duration'];
259	1	}
260
261	1	return [$count, $time];
262		}
263
264		/**
265		* Calculates the elapsed time for the given log messages.
266		* @param array $messages the log messages obtained from profiling
267		* @return array timings. Each element is an array consisting of these elements:
268		* `info`, `category`, `timestamp`, `trace`, `level`, `duration`, `memory`, `memoryDiff`.
269		* The `memory` and `memoryDiff` values are available since version 2.0.11.
270		*/
271	4	public function calculateTimings($messages)
272		{
273	4	$timings = [];
274	4	$stack = [];
275
276	4	foreach ($messages as $i => $log) {
277	3	list($token, $level, $category, $timestamp, $traces) = $log;
		0 ignored issues – show Unused Code introduced 2015-11-20 21:52 UTC by Report Bug Copy Issue Report The assignment to `$category` is unused. Consider omitting it like so `list($first,,$third)`. This checks looks for assignemnts to variables using the `list(...)` function, where not all assigned variables are subsequently used. Consider the following code example. <?php function returnThreeValues() { return array('a', 'b', 'c'); } list($a, $b, $c) = returnThreeValues(); print $a . " - " . $c; Only the variables `$a` and `$c` are used. There was no need to assign `$b`. Instead, the list call could have been. list($a,, $c) = returnThreeValues(); Loading history... Unused Code introduced 2015-11-20 21:52 UTC by Report Bug Copy Issue Report The assignment to `$traces` is unused. Consider omitting it like so `list($first,,$third)`. This checks looks for assignemnts to variables using the `list(...)` function, where not all assigned variables are subsequently used. Consider the following code example. <?php function returnThreeValues() { return array('a', 'b', 'c'); } list($a, $b, $c) = returnThreeValues(); print $a . " - " . $c; Only the variables `$a` and `$c` are used. There was no need to assign `$b`. Instead, the list call could have been. list($a,, $c) = returnThreeValues(); Loading history...
278	3	$memory = isset($log[5]) ? $log[5] : 0;
279	3	$log[6] = $i;
280	3	if ($level == Logger::LEVEL_PROFILE_BEGIN) {
281	2	$stack[] = $log;
282	3	} elseif ($level == Logger::LEVEL_PROFILE_END) {
283	2	if (($last = array_pop($stack)) !== null && $last[0] === $token) {
284	2	$timings[$last[6]] = [
285	2	'info' => $last[0],
286	2	'category' => $last[2],
287	2	'timestamp' => $last[3],
288	2	'trace' => $last[4],
289	2	'level' => count($stack),
290	2	'duration' => $timestamp - $last[3],
291	2	'memory' => $memory,
292	2	'memoryDiff' => $memory - (isset($last[5]) ? $last[5] : 0),
293		];
294	2	}
295	2	}
296	4	}
297
298	4	ksort($timings);
299
300	4	return array_values($timings);
301		}
302
303
304		/**
305		* Returns the text display of the specified level.
306		* @param int $level the message level, e.g. [[LEVEL_ERROR]], [[LEVEL_WARNING]].
307		* @return string the text display of the level
308		*/
309	3	public static function getLevelName($level)
310		{
311		static $levels = [
312		self::LEVEL_ERROR => 'error',
313		self::LEVEL_WARNING => 'warning',
314		self::LEVEL_INFO => 'info',
315		self::LEVEL_TRACE => 'trace',
316		self::LEVEL_PROFILE_BEGIN => 'profile begin',
317		self::LEVEL_PROFILE_END => 'profile end',
318		self::LEVEL_PROFILE => 'profile'
319	3	];
320
321	3	return isset($levels[$level]) ? $levels[$level] : 'unknown';
322		}
323		}
324

yiisoft / yii2

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