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  • OCI-Lob::erase()

    (PHP 5, PHP 7, PECL OCI8 >= 1.1.0)

    Erases a specified portion of the internal LOB data

    说明

    OCI-Lob::erase([int $offset[,int $length]]): int

    Erases a specified portion of the internal LOB data starting at a specified$offset. If called without parameters, it erases all LOB data.

    For BLOBs, erasing means that the existing LOB value is overwritten with zero-bytes. For CLOBs, the existing LOB value is overwritten with spaces.

    参数

    $offset
    $length

    返回值

    Returns the actual number of characters/bytes erased 或者在失败时返回FALSE.

    参见

    • OCI-Lob::truncate

    上篇:OCI-Lob::eof()

    下篇:OCI-Lob::export()