OCI-Lob::seek

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

OCI-Lob::seek — Sets the internal pointer of the large object

bool OCI-Lob::seek ( int $offset [, int $whence = OCI_SEEK_SET ] )

Sets the internal pointer of the large object.

offset

Indicates the amount of bytes, on which internal pointer should be moved from the position, pointed by whence.

whence

May be one of:

OCI_SEEK_SET - sets the position equal to offset
OCI_SEEK_CUR - adds offset bytes to the current position
OCI_SEEK_END - adds offset bytes to the end of large object (use negative value to move to a position before the end of large object)

成功时返回 TRUE，或者在失败时返回 FALSE。