PHP5中文手册·Erases a specified portion of the internal LOB data -- 追寻梦想＞编程乐园＞PHP 编程

OCI-Lob

int 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.

Returns the actual number of characters/bytes erased or FALSE in case of error.


	PHP5中文手册 OCI-Lob->eof OCI-Lob->export OCI8 PHP Manual OCI-Lob->erase (PHP 5, PECL oci8:1.1-1.2.4) OCI-Lob->erase — Erases a specified portion of the internal LOB data 说明 OCI-Lob int 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. 参数 `offset` `length` 返回值 Returns the actual number of characters/bytes erased or `FALSE` in case of error. 参见 OCI-Lob->truncate OCI-Lob->eof OCI-Lob->export OCI8 PHP Manual

OCI-Lob->erase