PHP_STREAM_OPTION_SET_CHUNK_SIZE 1458 ext/standard/streamsfuncs.c 	ret = php_stream_set_option(stream, PHP_STREAM_OPTION_SET_CHUNK_SIZE, (int)csize, NULL);
PHP_STREAM_OPTION_SET_CHUNK_SIZE  364 main/php_streams.h #define php_stream_set_chunk_size(stream, size) _php_stream_set_option((stream), PHP_STREAM_OPTION_SET_CHUNK_SIZE, (size), NULL TSRMLS_CC)
PHP_STREAM_OPTION_SET_CHUNK_SIZE 1362 main/streams/streams.c 			case PHP_STREAM_OPTION_SET_CHUNK_SIZE: