PHP Manual Prev Next print_r (PHP 4 ) 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. Compare print_r() to var_dump(). <?php $a = array (1, 2, array ("a", "b", "c")); print_r ($a); ?> Warning 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. Prev Home Next isset Up serialize

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