OCI8 函数
PHP 手册

OCI-Lob->erase

(No version information available, might be only in CVS)

OCI-Lob->eraseErases 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


OCI8 函数
PHP 手册