PHP Functions Essential Reference

set_file_buffer

bool set_file_buffer(resource file_handle, int buffer) 

Sets the file buffer size.

Returns:

TRUE on success; FALSE on error

Description:

With this function, you can change the file buffer size for the specified file handle. Specifying a buffer size of 0 changes the operation mode to “unbuffered”; all other values change the operation mode to “fully buffered,” using the given number of bytes.

Example:

Change file buffer to 4KB

$fh = fopen("text.txt", "r+"); $buffer_size = 4096; if(!set_file_buffer($fh, $buffer_size)) { echo ("Couldn't change file buffer size"); } else { echo ("New file buffer size is $buffer_size bytes"); }