php - Echo placeholder if field is empty -

I have any input that I will place in placeholder text, but only then The empty string is empty. The value known in the text box resonates with a PHP array, but if this value is empty, the placeholder should be echoed instead. For the time being, I've received this code:

 & amp; Lt? Php echo sponsor data ('address0') == ''? 'Address Line 1': 'Other'; ? & Gt;  
  Sponsor Data ()  gets stuff from just one array; This is the only logic key here is the key bit that returns the temporary.  
 This code gives strange behavior; I get stuff like Hello World Attender Line 1  where  Hello World  user typed text and  address line 1  obviously placeholder oddly From, the placeholder is stored in the array when presented.  
 My question is: Can someone offer the improvement of my Ternary operator or if he does not work, then I would like to write an inline  if  statement. Say  
 Thank you   
 
 
 You are running issues in operator preferences: / P> 
  & lt ;? Php echo (sponsor data ('address 0') == ''? 'Address line 1': 'other'); ? & Gt;   
 (Put brackets around the Tanner operator details).