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abstract public slice ( integer $offset, integer | null $length = null, boolean $preserveKeys = false ) : |
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| $offset | integer | Slice begin index |
| $length | integer | null | Length of the slice |
| $preserveKeys | boolean | Whether array keys are preserved or no |
| 리턴 | A new array, which is slice of the current array with specified $length | |
public abstract function slice($offset, $length = null, $preserveKeys = false);