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(PHP 5 >= 5.3.3)
stream_set_read_buffer — Set read file buffering on the given stream
Sets the read buffer. It's the equivalent of stream_set_write_buffer(), but for read operations.
The file pointer.
The number of bytes to buffer. If
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.
Returns 0 on success, or EOF if the request cannot be honored.