note 83562 deleted from language.types.null by danbrown

Note Submitter: php_manual at SPAMNONE dot jessemccarthy dot net ---- The post by <rburghol a t veetee dot edu> has nothing to do with the special NULL value. He's comparing a float (0.0) to a string ('NULL'). The special NULL value is correctly represented as a bareword (NULL), not a string ('NULL'). <?php /* start <rburghol a t veetee dot edu> example, with comment */ $tvar = 0.0; // The string 'NULL' is converted to integer 0 for the comparison if ($tvar == 'NULL') { print("Match"); } else { print("No Match"); } /* end <rburghol a t veetee dot edu> example */ // Example using actual NULL if ($tvar == NULL) { print("Match"); } else { print("No Match"); } ?> Output: Match Match It's the same result, but it's important to know what's happening and why, and how to represent NULL.