触发警告时，PHP未插入MySQL行

Question

I have just inherited a PHP/MySQL application which I am providing support for. I have tried to set up my local environment as close to the production environment, however somehow, the live code is managing to insert a row of data where the same code on my local setup is producing a warning and not performing the insert.

I have tried turning off MySQL Strict Mode and running the query from PHP directly against the database, and I found that the warnings were generated but the insert still worked.

What is preventing the insert from happening from code within PHP in my local environment?

UPDATE (Include Example)

$sql="insert into table("name") values("12312341234")";     
$result=mysql_query($sql);
if ($result) {
    // do stuff
}
else {
    $error = mysql_error();
    data['error'] = $error;
}

The error message which is generated is

"Field 'filed_name' doesn't have a default value"

So basically, what is happening on the production server post query is a new row is appearing, however locally, there is nothing.

I will also mention, the else clause is not even present on the production code. I have put it there to simply find out what is going on.

Answer 1

The production enviroment may be configured to not show warnings with somethin like error_reporting(0); or similar configuration on php.ini. Maybe if you use this setup on your local enviroment the results will be similar. BUT. be aware: dont see the errors and/or warnings maybe a VERY dangerous thing. You should try to solve the problem that raise the warning.

Answer 2

"Field 'filed_name' doesn't have a default value"

Meaning of the message is that

You have a column in the table defined not null without a default value clause.
And unless which I can't insert without passing a value for it through an insert statement.

Example :

create table test_table( i int not null auto_increment primary key,
                         j int not null,
                         name varchar(10) );

insert into test_table(name) values( 'Ravinder' );
ERROR 1364 (HY000): Field 'j' doesn't have a default value

Check for such field in your table and include it in your insert statement.

Answer 3

So I have been able to replicate the behaviour. I had previously tried setting sql_mode from within the database.

SET @@global.sql_mode = '';
SET @@sql_mode = '';

This did not work. I am using MySQL 64bit on Windows 7 . I tried editing the my.ini file and changing

sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

to

sql-mode=

This prevented the MySQL service from starting.

In the end, I re ran the MySQLInstanceConfig.exe and unchecked the Enable Strict Mode option during the setup.

I also now think it might be possible to simply remove sql-mode= from the my.ini file all together to achieve the same result as this seems to be the only thing which is different after running the config wizard.

Lastly, I restarted MySQL and Apache2.2