stream_set_read_buffer

Function name: stream_set_read_buffer()

Applicable version: PHP 4.3.0 and above

Function description: The stream_set_read_buffer() function is used to set the read buffer size of the specified stream. The buffer size determines the amount of data to be read at one time, and a larger buffer can improve reading efficiency.

Syntax: bool stream_set_read_buffer ( resource $stream , int $buffer )

parameter:

• $stream: The stream resource to set the buffer can be a file pointer or URL opened through the fopen() function.
• $buffer: The buffer size to be set, in bytes.

Return value: Return true on success, and false on failure.

Example:

 // 打开一个文件流$handle = fopen('file.txt', 'r'); // 设置读取缓冲区大小为1024字节if (stream_set_read_buffer($handle, 1024)) { echo "读取缓冲区大小设置成功！"; } else { echo "读取缓冲区大小设置失败！"; } // 关闭文件流fclose($handle);

In the above example, we open a file stream named file.txt and assign it to the variable $handle. Then, by calling the stream_set_read_buffer() function, the read buffer size is set to 1024 bytes. If the setting is successful, the output is "Read Buffer Size Setting Successfully!", otherwise the output is "Read Buffer Size Setting Failed!". Finally, we close the file stream by calling the fclose() function.

Please note that the file name and buffer size in the example are for reference only and you should make corresponding adjustments accordingly according to actual needs.