PHP funkce print_r()

Dostupnost ve verzích: PHP 4.0

Prints human-readable information about a variable

Parametry

Parametr	Datový typ	Výchozí hodnota	Poznámka
$expression	mixed		The expression to be printed.
$return	bool	null	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).

Návratové hodnoty

mixed

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.

Další zdroje

https://php.net/manual/en/function.print-r.php