Some PHP developers write code with Globals On.

Left click wamp icon -> config files -> php.ini

When its open, search for register_globals

These must be Off by default e.g.
register_globals = Off

Many developers were used to program in environment of On Globals. This makes programming easier but this method is vulnerable and security risk. You do not have to get variables which you post at the new page where PHP does something in case of Globals On. Sometimes developers still do the same thing.

This is not recommended.

Globals should be off in PHP.ini and scripts should work while Globals are off.

So the reason is obvious. Many scripts you download, you will see do not get variables when these are posted. Those are programmed in environment of Globals On (Easy way PHP Coding).

Next time you download a script and if that is not working, check that Variables are being requested after when these are posted or not.

What to Do

Suppose someone posts a form with his name and email with variables txtName and txtEmail which are text input names. txtName and txtEmail should be requested at the next PHP page. If these are not being called, then you will get Null result which will be empty.

Request these variables in the following manner at the next page at the top of everything where PHP code starts. In case of above example:

$txtName=$_REQUEST["txtName"];
$txtEmail=$_REQUEST["txtEmail"];

Now $txtName contains the name of user and $txtEmail contains the email and you can use these further. When some PHP script is not working, always see that if these variables are being requested by this manner at the next page? If not you can get every variable like this and the script will be working in most cases. You can also use $_Post instead of $_REQUEST.

Another reason is not using proper PHP starting tag.

Wrong Tag

<?

Correct Usage of PHP Tag

<?php

Some servers will output errors if you do not use proper PHP starting tag.

Also read Post and Get if this is not clear.

PHP Script Not Working – Solution is a post from: PHP Magic Book - Free PHP Scripts, Tutorials and Downloads

Related Posts

• Date Difference In PHP – Find Date Difference
• Insert Adsense After the First Post in Your WordPress Blog
• PHP While Loop
• Date Object For Future or Past – Easy Monthwise or Datewise Records Selection Using PHP
• Display How Many Post Have Been Published Today at Your Blog
• Confirm Form Variables Post Before Script Execution
• Dynamic Random Number Generation Using PHP
• Function Existence Check Using PHP
• Print in PHP
• Browser Check With PHP