Swoole\Buffer::substr
(PHP 5 >= 5.2.0, PHP 7, PECL swoole >= 1.9.0)
Swoole\Buffer::substr — Read data from the memory buffer based on offset and length. Or remove data from the memory buffer.
说明
public Swoole\Buffer::substr
( integer
$offset
[, integer $length
[, bool $remove
]] ) : stringIf $remove is set to be true and $offset is set to be 0, the data will be removed from the buffer. The memory for storing the data will be released when the buffer object is deconstructed.
参数
-
offset -
The offset.
-
length -
The length.
-
remove -
Whether to remove the data from the memory buffer.
返回值
The data or string readed from the memory buffer.