PHP common data gateway sets and gets values of common data structures. It provides static functions which can be called from anywhere to set up a common data structure with a name and values for named properties. A data structure is created if one does not exist with the given name. Properties may be changed to a given value specifying a string with the name of the data structure followed by the name of the property, separated by a dot. If no value is passed, the current value of the property is returned.
itch41 parses a file of level 3 NASDAQ stock exchange data, such as ftp://emi.nasdaq.com/ITCH/S030711-v41.txt.gz. This is mainly for demonstration purposes, lacking column domains, column constraints, data validation, timestamp calculations, stock symbol lookup for execution/cancel/delete messages, derived columns (e.g. for partitioning), and the general kinds of pre-processing one would expect from a production tick data loader.