PHP: stream_set_read_buffer - Manual

(PHP 5 >= 5.3.3, PHP 7, PHP 8)

stream_set_read_buffer — Set read file buffering on the given stream

Description

function stream_set_read_buffer(resource $stream, int $size): int

Parameters

stream

The file pointer.

size

The number of bytes to buffer. If size is 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.