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Editorial Team
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Asked: 2026-05-15T01:34:17+00:00

I have an insert: $sql = ‘INSERT into orders SET fax_int_prefix = ‘.$_SESSION[‘fax_int_prefix’].’, fax_prefix

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I have an insert:

$sql = 'INSERT into orders SET 
fax_int_prefix = "'.$_SESSION['fax_int_prefix'].'", 
fax_prefix = "'.$_SESSION['fax_prefix'].'", 
fax_first = "'.$_SESSION['fax_first'].'", 
fax_last = "'.$_SESSION['fax_last'];

The value of all of these fields is that they are blank right before the insert. Here is an example of one of them I echo’d out just before the insert:

$_SESSION[fax_prefix] =

For some reason it inserts the integer 0, instead of a blank value or null, as it should. Why is it inserting 0’s instead of blank spaces into my DB?

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1 Answer

  1. Editorial Team

    Check the structure of your table. It’s possible that it is not of type char or varchar (or that it is and has a default value set to ‘0’). To do this you can use phpmyadmin, SQLyog or other MySql admin programs.

    Edit: If you want to store integers, but have the option of no value then make sure the type is nullable. i.e.: column_name INT(n) DEFAULT NULL

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