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print_r --
Prints human-readable information about a variable
Description
void print_r (mixed expression)
This function displays information about the values of variables
in a way that's readable by humans. If given a string, integer
or double, the value itself will be printed. If given an array,
values will be presented in a format that shows keys and
elements. Similar notation is used for objects.
This function will continue forever if given an array or object
that contains a direct or indirect reference to itself or that
contains an array or object on a deeper level that does so.
This is especially true for print_r($GLOBALS),
as $GLOBALS is itself a global variable and
contains a reference to itself as such.
