OCILob::erase

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

OCILob::erase — Erases a specified portion of the internal LOB data

说明

public OCILob::erase(?int $offset = null, ?int $length = null): int|false

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.

更新日志

版本 说明
8.0.0, PECL OCI8 3.0.0 offset and length are now nullable.
8.0.0, PECL OCI8 3.0.0 The OCI-Lob class was renamed to OCILob to align with PHP naming standards.