PHP Manual

Documentation

PHP function print_r()

2019-09-11T08:04:03.000Z

Obsah článku

Availability in PHP 4.0

Prints human-readable information about a variable

Parameters

Parameter	Data type	Default value	Note
`$expression`	`mixed`	not	The expression to be printed.
`$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).

Return values

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.

Other resources

Official documentation for the print-r function

Jan Barášek

Jan Barášek Více o autorovi

Autor článku pracuje jako seniorní vývojář a software architekt v Praze. Navrhuje a spravuje velké webové aplikace, které znáte a používáte. Od roku 2009 nabral bohaté zkušenosti, které tímto webem předává dál.

Rád vám pomůžu:

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