struct php_stream_ops

typedef struct _php_stream_ops {
             /* all streams MUST implement these operations */
             size_t (*write)(php_stream *stream, const char *buf, size_t count TSRMLS_DC);
             size_t (*read)(php_stream *stream, char *buf, size_t count TSRMLS_DC);
             int (*close)(php_stream *stream, int close_handle TSRMLS_DC);
             int (*flush)(php_stream *stream TSRMLS_DC);
             
             const char *label; /* Nome descrevendo essa classe de fluxo */
             
             /* Essas operações são opcionais, e podem ter valor nulo (NULL) se o fluxo não
              * suportar a operação em particular */
            int (*seek)(php_stream *stream, off_t offset, int whence TSRMLS_DC);
            char *(*gets)(php_stream *stream, char *buf, size_t size TSRMLS_DC);
            int (*cast)(php_stream *stream, int castas, void **ret TSRMLS_DC);
            int (*stat)(php_stream *stream, php_stream_statbuf *ssb TSRMLS_DC);
        } php_stream_ops;