Difference between print_r() and var_dump()

print_r() and var_dump() spitting out a array.

print_r():- It displays information about a variable in a way that’s readable by humans. array values will be presented in a format that shows keys and elements.
example:-

<?php
$arr_name=array("John","Tony","Anna","Ruby");
print_r($arr_name);
?>

var_dump:- It displays structured information about variables/expressions including its type and value.
example:-

<?php
$arr_name=array("John","Tony","Anna","Ruby");
var_dump($arr_name);
?>