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.

说锟斤拷

public Swoole\Buffer::substr ( integer $offset [, integer $length [, bool $remove ]] ) : string

If $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.

锟斤拷锟斤拷

offset: The offset.
length: The length.
remove: Whether to remove the data from the memory buffer.

锟斤拷锟斤拷值

The data or string readed from the memory buffer.