尝试将键值插入MySQL表时出错

Question

I'm having problems trying to insert a key value (which I generate) into a table (jml_acymailing_subscriber).

$generateKey = md5(substr($email[1],0,strpos($email[1],'@')).rand(0,10000000));
$subid = 3603;
$sql2 = "UPDATE jml_acymailing_subscriber SET key='$generateKey', WHERE subid='$subid'";
$result2 = mysql_query($sql2,$con) or trigger_error(mysql_error(),E_USER_ERROR);

The key type is:

TYPE -->  varchar(250)  
ORDENATION --> utf8_general_ci
NULL --> yes
DEFAULT --> NULL

And this is the error I get:

Fatal error: You have an error in your SQL syntax; check the manual that corresponds to 
your MySQL server version for the right syntax to use near 
'key='15e3e092aa8672a6f7ad3e8a5a1db537', WHERE subid='3603'' at line 1 in 
/public_html/bootstrap3/donarAltaCatala.php on line 136

I have no problem inserting values like userid , name , created or any other ones. Any one knows where is the problem? I'm starting in PHP/SQL...

Thank you! I really appreciate it!

Answer 1

key is reserverd word in mysql, so can use backticks key

$sql2 = "UPDATE jml_acymailing_subscriber SET `key`='$generateKey' WHERE subid='$subid'";

http://dev.mysql.com/doc/refman/5.5/en/reserved-words.html

Answer 2

Two things;

KEY is a reserved word in MySQL , so to use it as a field/table name it needs to be quoted with backticks (`)

...and...

"UPDATE jml_acymailing_subscriber SET key='$generateKey', WHERE subid='$subid'"
                                                        ^ erroneous comma

Corrected, that would result in;

"UPDATE jml_acymailing_subscriber SET `key`='$generateKey' WHERE subid='$subid'"

Answer 3

在key='$generateKey'之后删除，使它看起来像：

"UPDATE jml_acymailing_subscriber SET key='$generateKey' WHERE subid='$subid'";