stream_set_read_buffer
  Set read file buffering on the given stream
  
 
  Description
  
   int stream_set_read_buffer
    ( resource $stream
   , int $buffer
   )
  
  
 
  Parameters
  
   
    - 
stream
- 
     
      The file pointer.
      
- 
buffer
- 
     
      The number of bytes to buffer. If bufferis 0 then read operations are unbuffered.  This ensures that all reads
      with fread are completed before other processes are
      allowed to read from that input stream.
 
 
 
  Return Values
  
   Returns 0 on success, or another value if the request
   cannot be honored.