Where there's a SQL query where the city has a note

Where there's a SQL query, there's a note.

Notice:use of undefined constant mytime-assumed ' mytime ' in/var/www/html/calsn/calresult.php on line 15
This is the last line (15 lines)
$query = "SELECT * from Empoloyee where empid= ' $empid '";
$result =mysql_query ($query) or Die (Mysql_error ());
$num =mysql_num_rows ($result);
if ($num >0)
{
$row =mysql_fetch_array ($result);
$mytime = $row [MyTime];

------Solution--------------------
$row [MyTime]

No quotes?
------Solution--------------------
Yes, the key names are quoted.
------Solution--------------------
Use of undefined constant mytime

With undefined constants, if the MyTime in $row[mytime] is missing, PHP will default as a constant, if the constant cannot find it as a string, but still throw a notice hint, although the effect is small, but the logic is a bit inconsistent, It also slightly affects a little bit of performance (although this point performance can be indifferent)
------Solution--------------------
$mytime = $row [' MyTime '];

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