PHP empty function to determine whether the MySQL form is an empty _php base

value to be judged.
Very simply, give an example.
Method One:

Copy Code code as follows:

$sql = "SELECT * Form ABC"
$result = mysql_query ($sql);
$row = Mysql_fetch_array ($result);
if (empty ($row))//start to judge is enough empty
{
echo "NULL";
}
Else
{
echo "NOT NULL";
}

Method Two:

Copy Code code as follows:

$sql = "SELECT * Form ABC"
$result = mysql_query ($sql);
$row = Mysql_fetch_array ($result);
if (! $row)//start to judge is enough empty
{
echo "NULL";
}
Else
{
echo "NOT NULL";
}

In fact, the Mysql_fetch_array function in use if the table is empty table, it will return false, this time $row naturally did not assign

Value succeeded.
Remember, don't dare to use $row = Mysql_fetch_array ($result) or Die (Mysql_error ());
If the back yo or die, then the program execution to Mysql_fetch_array will terminate execution.