[PHP] PHP: array with null shows different with print_r and var_dump

[Sanjay Mantoor]

Hello,

I am new to PHP and PHP community.

Following program outputs different values with print_r and var_dump.

$array = array(null, NULL);

print_r($array); prints values like below
Array
(
[0] =
[1] =
)

where as var_dump($array) prints values like below
array(2) {
  [0]=
  NULL// Does this convert to null to NULL?
  [1]=
  NULL
}

Can you tell me why the above difference?


-- 
Thanks,
Sanjay Mantoor

Re: [PHP] PHP: array with null shows different with print_r and var_dump

[Casey]

On Tue, Apr 1, 2008 at 11:49 PM, Sanjay Mantoor
[EMAIL PROTECTED] wrote:
 Hello,

  I am new to PHP and PHP community.

  Following program outputs different values with print_r and var_dump.

  $array = array(null, NULL);

  print_r($array); prints values like below
  Array
  (
 [0] =
 [1] =
  )

print_r converts null, which is a variable type, like integer, string,
float, etc, into an empty string.
  where as var_dump($array) prints values like below
  array(2) {
   [0]=
   NULL// Does this convert to null to NULL?
null is case-insensitive, so it doesn't matter how you type it.
   [1]=
   NULL
  }
var_dump converts null into the string NULL.

  Can you tell me why the above difference?



-- 
-Casey

-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Re: [PHP] PHP: array with null shows different with print_r and var_dump

[Robert Cummings]

On Wed, 2008-04-02 at 12:19 +0530, Sanjay Mantoor wrote:
 Hello,
 
 I am new to PHP and PHP community.
 
 Following program outputs different values with print_r and var_dump.
 
 $array = array(null, NULL);
 
 print_r($array); prints values like below
 Array
 (
 [0] =
 [1] =
 )
 
 where as var_dump($array) prints values like below
 array(2) {
   [0]=
   NULL// Does this convert to null to NULL?
   [1]=
   NULL
 }
 
 Can you tell me why the above difference?

NULL and null are the same thing. If I'm correct var_dump() was created
to solve the problem of not knowing what the datatypes are when using
print_r().

Cheers,
Rob.
-- 
http://www.interjinn.com
Application and Templating Framework for PHP


-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php