| 1 | <?php  | 
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| 14 | class Inf  | 
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| 15 | { | 
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| 16 | private $duration;  | 
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| 17 | |||
| 18 | private $title;  | 
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| 19 | |||
| 20 | private $version;  | 
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| 21 | |||
| 22 | public function __construct($duration, string $title = null, $version = 6)  | 
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| 28 | |||
| 29 | public static function fromString(string $string)  | 
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| 35 | |||
| 36 | public function getDuration()  | 
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| 40 | |||
| 41 | public function getTitle()  | 
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| 45 | |||
| 46 | public function __toString()  | 
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| 57 | }  | 
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| 58 | 
This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.