Warning: mysql_result(): supplied argument is not a valid MySQL result

im getting Warning: mysql_result(): supplied argument is not a valid MySQL result resource in when using str_replace, im trying to replace a all "-" characters with " " on a string

im pulling the original string form mysql database and it on this format "this-is-an-example-of-a-phrase" and i just want to make it "this is an example of a phrase" and im using this code :

Code:

$TitleWithSpaces = str_replace("-", " ", $queryGetTitle); echo mysql_result($TitleWithSpaces,0);

if i use the query directly without replacing the dashes it works just fine but when trying to replace characters it wont work, im trying to understand why this happends.

i would apreciate any help thanks.

*UPDATE*
found a way around it, i replaced the dashes with the replace function of mysql so in other words i did it at the time of the query which is i guess a better practice than trying to use php to do this