unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING error

Question

i\'ve been staringly blanky at this error and can\'t seem to know what the problem is.When i run the query i get this error:

unexpected T_ENCAPSED_AND

Answer 1

Use { before $ sign. And also add addslashes function to escape special characters.

$sqlupdate1 = "UPDATE table SET commodity_quantity=".$qty."WHERE user=".addslashes($rows['user'])."'";