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<?php |
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/** |
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* Copyright 2017, Jean Traullé <[email protected]> |
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* |
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* Licensed under The MIT License |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @copyright Copyright 2017, Jean Traullé <[email protected]> |
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php) |
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* |
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*/ |
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namespace CakeCharts\Utility; |
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/** |
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* Class Traces |
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* @package CakeCharts\Utility |
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*/ |
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class Traces |
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{ |
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/** |
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* @var Trace[] Array of Trace objects |
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* @see \CakeCharts\Utility\Trace |
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*/ |
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private $traces; |
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/** |
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* @var \Exception|null Encountered error, if any |
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*/ |
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private $error = null; |
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/** |
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* Traces constructor. |
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* |
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* @param array|null $traces Array of Trace objects |
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* @see \CakeCharts\Utility\Trace |
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*/ |
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public function __construct(array $traces = null) |
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{ |
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$this->traces = $traces; |
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} |
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/** |
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* Add a Trace object to the list of traces |
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* |
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* @param Trace $trace A trace object |
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* @see \CakeCharts\Utility\Trace |
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* @return void |
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*/ |
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public function addTrace(Trace $trace) |
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{ |
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$this->traces[] = $trace; |
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} |
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/** |
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* Output series as plotly.js compliant data series |
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* |
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* @return string plotly.js compliant (JSON) data series |
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*/ |
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public function __toString() |
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{ |
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try { |
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$return = []; |
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foreach ($this->traces as $trace) { |
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$return[] = $trace->toArray(); |
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} |
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return json_encode($return); |
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} catch (\Exception $e) { |
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$this->error = $e; |
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return json_encode([]); |
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} |
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} |
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/** |
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* @return \Exception|string Encountered error, if any |
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*/ |
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public function getError() |
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{ |
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return $this->error; |
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} |
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} |
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jtraulle /
CakeCharts
Our type inference engine has found an assignment of a scalar value (like a string, an integer or null) to a property which is an array.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.
To type hint that a parameter can be either an array or null, you can set a type hint of array and a default value of null. The PHP interpreter will then accept both an array or null for that parameter.
The function can be called with either null or an array for the parameter
$needlebut will only accept an array as$haystack.