Question

I am using php to insert element values of a form in MYSQL. My form contains 20 different elements, that means

count($_POST)

returns 20. How can I make an INSERT query efficiently in PHP.

Answer 1

I will extract 20 values one by one then concatenate them again one by
one. I do not want to follow this method. Do you have some better
method?

Yes, you can use foreach. Example below assumes 3 thigs:

• all of your form fields are text fields,
• form fields are in the same order as columns in your table
• form elements (<input>) have the same name attribute as columns names in your table

It can go like this:

$sql = 'INSERT INTO table_name VALUES (';
foreach ($_POST as $key => $value)
    $sql .= mysqli_real_escape_string($value);
$sql .= ')';