(PHP 5 >= 5.3.0, PHP 7)
SplFixedArray::offsetUnset — Unsets the value at the specified $index
$index
) : voidUnsets the value at the specified index.
index
The index being unset.
没有返回值。
Throws RuntimeException when index
is outside
the defined size of the array or when index
cannot be parsed as an integer.