Ok, so I started in the middle of the book. Actually I have been going through the db access portion of the book and was having trouble with the register.php not working.

Here is the error I keep getting:

Warning: array_push(): First argument should be an array in /home/thurmma/public_html/staging/enum_options.php on line 16
ENUM options with the default value:

Warning: Invalid argument supplied for foreach() in /home/thurmma/public_html/staging/enum_options.php on line 19


Warning: array_pop(): The argument should be an array in /home/thurmma/public_html/staging/enum_options.php on line 23
ENUM options without the default value:

Warning: Invalid argument supplied for foreach() in /home/thurmma/public_html/staging/enum_options.php on line 26

I am not very knowledgable in arrays at all. Here is the code from the page:

<?php
//enum_options.php
include "./common_db.inc";
$link_id = db_connect();
mysql_select_db("mojoweb_sampledb");

$query = "SHOW COLUMNS FROM user LIKE 'usercountry'";
$result = mysql_query($query);
$query_data = mysql_fetch_array($result);

if(eregi("('.*')", $query_data["Type"], $match)) {
   $enum_str = ereg_replace("'", "", $match[1]);
   $enum_options = explode(',', $enum_str);
}

array_push($enum_options, $query_data["Default"]);

echo "ENUM options with the default value:<BR>";
foreach($enum_options as $value) echo "-$value<BR>";

echo "<P>";

array_pop($enum_options);

echo "ENUM options without the default value:<BR>";
foreach($enum_options as $value) echo "-$value<BR>";
?>


I would really appreciate it if someone could steer me in the right direction.

Mark

Well, the variable $enum_options doesn't exist before you're passing it to array_push, so PHP is complaining that you're not sending an array.

You need to initialize your variables before you use them:

if(!isset($enum_options) || !is_array($enum_options))
{
    $enum_options = array();
}


Take care,

Nik
http://www.bigaction.org/

Great :-(
How do you initialize your variables before you use them?

Where do you stick your coding?

The book does not make this clear as I have the same error as the thurmma.

The issue is the countries to be selected in the form. In my case the form shows a blank list of countries.

My question: do we just add a list of countries options? or are they included from a simple text file.

Well, it only makes sense to have a variable already in existence if you're going to compare it to some other value. PHP issues a NOTICE level warning that you can suppress if you want to -- just set error_reporting to "E_ALL & ~E_NOTICE" (in English: "Report all errors except E_NOTICE").

However, initializing variables is easy:

if (! isset($var)) { $var = ''; } // string
if (! isset($var)) { $var = array(); } // array
if (! isset($var)) { $var = 0; } // int
if (! isset($var)) { $var = 0.0; } // float
if (! isset($var)) { $var = FALSE; } // boolean


As far as where you get your list of countries, I would imagine that this info comes with your user viewer script in the book. I don't have the book, nor do I have the code for it, nor do I have the time to download it and look through it.

If you don't have the list of countries, I suggest you create a database table that stores all the countries you're interested in, and use that table to generate whatever you need -- be it an HTML <select> dropdown, or a PHP array, whatever.


Take care,

Nik
http://www.bigaction.org/