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# print_r

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().

      1
      2 <?php
      3 $a = array (1, 2, array ("a", "b", "c"));
      4 print_r ($a);
      5 ?>
      6

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