Continuing in my effort to port an app from PHP version 5.1.6 to
5.3.3, the app uses this construct all over the place when building


I never could find any documentation for this, but I assumed it was
some conditional thing - use $var if it's defined, otherwise use
nothing. In 5.1.6 it seems to do just that. But in 5.3.3 I'm not
getting the value of $var even when it is defined. Has this construct
been deprecated? Is there now some other way to achieve this?

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