update : 2015.11.03
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Erases a specified portion of the internal LOB data
OCI-Lob
PHP Manual

OCI-Lob::erase

(PHP 5, PECL OCI8 >= 1.1.0)

OCI-Lob::erase — Erases a specified portion of the internal LOB data

설명

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

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.

인수

offset

length

반환값

Returns the actual number of characters/bytes erased 실패 시 FALSE를 반환합니다.

OCI-Lob
PHP Manual