- substr: documentation ( source)
- var_dump: documentation ( source)
- bin2hex: documentation ( source)
- stream_filter_remove: documentation ( source)
- stream_get_contents: documentation ( source)
- stream_filter_append: documentation ( source)
- rewind: documentation ( source)
- fputs: documentation ( source)
- fopen: documentation ( source)
- gzcompress: documentation ( source)