'OR' statement

[spinhead]

Any idea why this statement evaluates to TRUE when $_POST[DisplayPhone] is 9876543210 ?

if (($_POST[DisplayPhone] == 0) OR ($_POST[DisplayPhone] == "") OR is_null($_POST[DisplayPhone]))

thanks

spinhead

[sde]

it must be the form you are sending it from. show us the code you are using to send it.

i re-created it here: http://codenewbie.com/test.php

Here is the code:

PHP Code:

<?
$_POST[DisplayPhone] = "9876543210";

if(($_POST[DisplayPhone] == 0) OR ($_POST[DisplayPhone] == "") OR is_null($_POST[DisplayPhone]))
{
  echo "true";
}
else
{
  echo "false";
}
?>

[redhead]

hmmm... maybe you could try:

PHP Code:

 <? 
$_POST[DisplayPhone] = "9876543210"; 

if(($_POST[DisplayPhone] == 0) || ($_POST[DisplayPhone] == "") || is_null($_POST[DisplayPhone])) 
{ 
  echo "true"; 
} 
else 
{ 
  echo "false"; 
} 
?>

[Epsilon]

If I'm not mistaken, couldn't it be simplified to this?

if(!$_POST[DisplayPhone]){...}

This will evaluate to true if $_POST[DisplayPhone] is 0 or an empty string, and false otherwise.

[sde]

there are probably more efficient ways for him to test for 0, "" or null, .. but it seems as though he should be worrying (sp?) about this after he figures out why his form isn't submitting the DisplayPhone var correctly.

i got opposite results from him with his exact code.

[bdl]

Actually, empty() will test for all three.