High performance PHP

A computer program product for storing object code on a non-transitory computer readable medium, the computer program product implementing functionality for efficiently executing server side script code, the computer program product comprising instructions for:

• retrieving a markup language document including server side script code specified using personal home page (PHP) syntax, wherein the server side script code is for execution on a server in response to a request for the markup language document, the server side code specifying statements using one or more untyped variables;
• generating C++ code from the server side script code, wherein the generated C++ code comprises one or more C++ classes comprising code corresponding to the server side script code, the generating comprising:
• associating the untyped variable with a first type based on a first usage of the untyped variable in the script code,
• associating the untyped variable with a second type based on a second usage of the untyped variable in the script code, and
• inferring a type of the untyped variable to be an ancestor of both the first type and the second type in a hierarchy of types of variables;
• and
• compiling the generated C++ code to object code, wherein the object code is invoked for processing the markup language document.