print_r Prints human-readable information about a variable &reftitle.description; mixedprint_r mixedexpression boolreturnfalse print_r displays information about a variable in a way that's readable by humans. print_r, var_dump and var_export will also show protected and private properties of objects with PHP 5. Static class members will not be shown. Remember that print_r will move the array pointer to the end. Use reset to bring it back to beginning. &reftitle.parameters; expression The expression to be printed. return If you would like to capture the output of print_r, use the return parameter. If this parameter is set to &true;, print_r will return its output, instead of printing it (which it does by default). &reftitle.returnvalues; If given a string, integer or float, 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. &reftitle.notes; ¬e.uses-ob; &reftitle.changelog; &Version; &Description; 4.3.0 The return parameter was added. If you need to capture the output of print_r with an older version of PHP prior, use the output-control functions. 4.0.4 Prior to PHP 4.0.4, print_r will continue forever if given an array or object that contains a direct or indirect reference to itself. An example is print_r($GLOBALS) because $GLOBALS is itself a global variable that contains a reference to itself. &reftitle.examples; 'apple', 'b' => 'banana', 'c' => array ('x', 'y', 'z')); print_r ($a); ?> ]]> &example.outputs; Array ( [a] => apple [b] => banana [c] => Array ( [0] => x [1] => y [2] => z ) ) ]]> 'monkey', 'foo' => 'bar', 'x' => array ('x', 'y', 'z')); $results = print_r($b, true); // $results now contains output from print_r ?> ]]> &reftitle.seealso; ob_start var_dump var_export