| 1 | <?php |
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| 5 | trait ManageErrors |
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| 6 | { |
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| 7 | /** |
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| 8 | * Return the last error number. A value of 0 means no errors. |
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| 9 | * |
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| 10 | * @param Connection|null $linkIdentifier |
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| 11 | * @return int |
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| 12 | */ |
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| 13 | public function errno(Connection $linkIdentifier = null) |
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| 19 | |||
| 20 | /** |
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| 21 | * Return the last error text. |
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| 22 | * |
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| 23 | * @param Connection|null $linkIdentifier |
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| 24 | * @return string |
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| 25 | */ |
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| 26 | public function error(Connection $linkIdentifier = null) |
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| 32 | } |
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| 33 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: