First of all, my advice is to encounter problems Ferry, PHP manual over 1001 times, the problem solved.
I Baidu a bit, netizens give the answer a variety of.
First correct Baidu to a wrong way:
Copy the Code code as follows:
$sql = "Update Table a set aname= ' name ' where aid=88";
$r = $conn->query ($sql);
if ($r) {
echo "Error that this is the data is updated, if the aid for 88 of the data does not exist The statement also returns TRUE. ";
}
A statement with where, even if it does not conform to the adjustment as long as the SQL statement is true, the true can be understood as the SQL statement is not error, and this write is the same effect: $conn->query ($sql) or Die ("Update error, please check the parameters are correct.") ");。
Gets the number of rows of update updates for the function by: mysql_affected_rows ($conn) or with Mysqli_affected_rows ($conn)
The above describes the PHP mysql php mysql to determine whether the updated after the update, including the content of the PHP MySQL, I hope to be interested in PHP tutorial friends helpful.
