Maintaining state across multiple php call from java

[bubba66]

Hi,

I'm trying to maintain state across multiple php calls from java - but failing.

By state I mean the variable / function space - see below:


QuercusEngine qe = new QuercusEngine();
qe.execute("<?php function foo() { echo 'hello foo\n'; } ?>");
qe.execute("<?php foo(); ?>");


Unfortunately on the last line I get - instead I'd like to be able to call the function foo:


Exception in thread "main" com.caucho.quercus.QuercusErrorException: eval::1: Fatal Error: 'foo' is an unknown function.
at com.caucho.quercus.env.Env.error(Env.java:6469)
at com.caucho.quercus.env.Env.error(Env.java:6355)


Any help would be appreciated.

Thanks.

[domdorn]

you're actually interpreting two different scripts here, thats why the second script doesn't "know" the function defined in the first one.

[yaohua]

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[Don Hamis]

A typical use of a function object is in writing callback functions. A callback in procedural languages, such as C, may be performed by using function pointers. However it can be difficult or awkward to pass a state into or out of the callback function. This restriction also inhibits more dynamic behavior of the function. A function object solves those problems since the function is really a faýade for a full object, thus it carries its own state.