gw1500se

The first thing I notice is that you have 2 session_start commands. I'm not sure that is the problem but remove the one in header.php.

Use sprintf. You can convert the number to whatever format you want to enforce. $test3 = sprintf('%04d',$test3key);

Sounds like an Ajax app to me.

Javascript is client side code and does not interface with the server. I don't know why/where you got the information that it was dangerous for the server. If it calls a php program on the server the there may be a vulnerability but you can write your php code to assure no unauthorized access.

Use PHPMailer as it is much easier.

I guess the first question is why are you adding and deleting tables? Those should be stable for the most part and from that just adding/deleting rows. The implication is that there is something wrong with your schema. Please explain you thinking on this.

Not sure how you want it but you can use array_merge. $ingredients = ["sugar", "flour", "water"]; $spec_recipe = array_merge(["apple", "cinnamon"], $ingredients);

Please edit your post and put your code using the code icon in the menu above (<>). It formats the the code properly making it easier to read and remove all the excess spaces.

You also need to authorize any email addresses. You add that address to the contacts list on MailJet which will send an authorization email. You need to click on the link in that email to authorize it, then you should be good to go.

Please use the code icon (<>) and select PHP for your code. It formats the code to make it easier to read.

You need to use the MailJet API.

$mSuccessMessage=mysql_query("Update_studentinfo(125, 'Shimla')");

Do you have the following in your php.ini? extension=php_oci8.dll extension=php_oci8_11.g.dll

This is really an HTML question. Have you tried using the <font> tag to format the output?

Looks like PHP was built without --with-oci8 parameter. You can install it thus: pecl install oci8