[Session Error on lines 5 and 6]

I'm assuming that your two $_POST indices are what's causing the E_NOTICE

Most likely this notice is being triggered because your form has not been submitted yet, therefore there are no $_POST indices to send. This notice can be avoided by using the isset() function to check for the post values first. E.g.

if (isset($_POST['user']))
{
// set your session variable
}

you can do the same for you other post value

 

 

[Ajax form submission issue]

To make sure at the function is actually being called upon submitting, I would simply have an alert() inside of your send_form() function and nothing more. Then once you are sure that the function is being triggered upon the form being submitted, you can be sure that something in the function is faulty and cam troubleshoot from there

[opening .php file in browser]

What happens when you click on your phpinfo file? Do you have a file in your www directory labeled index

[opening .php file in browser]

http://www.howtoforge.com/ubuntu_lamp_for_newbies

[php inside of div tag not passing value to parent page]

You aren't telling the browser where to change the field value. You need something like

function change_text 
{
var message = document.getElementById("message");
message.value = "test message";
}

 

[HTML caching in PHP?]

I myself prefer using memcache. However there are ways to specify cache times using Meta tags

 

http://us3.php.net/manual/en/book.memcache.php

[How to email username with anonymous form?]

Create a link to another php page, insert the recipients user id into the querystring to allow it to be used in your form page. I would create another table designed specifically to handle user messages. The typical fields for this would be an primary key, auto-incrementing field, recipient id field, sender id field, message field. Then create a messaging form that upon submitting, will insert the necessary information into your table. Also, create a section that will display messages where the current user id equals the recipient id in your table.

[Where was the error?]

depends on what each servers error_reporting and display_error settings are.

[Where was the error?]

do you both have a directory called "includes" with a file called header.php in it

[Help with a Simple Image Viewer Script]

If you have the image id as auto_increment in database it will be unsigned int, in which case it is better to check against

if (intval($_GET['photo']) > 0)
{
     // image id is valid
}

 

..since is_numeric can take some other values also than normal numbers like +0123.45e6 or hexadecimal notations.

True, however intval gives unexpected results with integers. It's more designed for strings

[Another error reporting question]

This is from php.net

 

display_errors string

This determines whether errors should be printed to the screen as part of the output or if they should be hidden from the user.

 

Value "stderr" sends the errors to stderr instead of stdout. The value is available as of PHP 5.2.4. In earlier versions, this directive was of type boolean.

 

Note:

 

This is a feature to support your development and should never be used on production systems (e.g. systems connected to the internet).

 

Note:

 

Although display_errors may be set at runtime (with ini_set()), it won't have any affect if the script has fatal errors. This is because the desired runtime action does not get executed.

 

If you wish to set error_reporting or display errors from a different setting other than the default value, you should place the ini_set at the top of your script(s)

[Help with a Simple Image Viewer Script]

On your photo.php page, you will want to grab the query string variable using $_GET['photo']

The only "cleansing" of this variable that really needs done is to make sure that the variable passed through the URL is a numeric value.

$photo_id = $_GET['photo'];
if (is_numeric($photo_id))
{
// do something with the photo_id
} else
{ 
trigger_error('invalid photo id',E_USER_ERROR);
}

[Happy birthday Crayon Violent!]

Happy birthday man. Enjoy it

[opening .php file in browser]

You want to install libapache2-mod-php5

 

Refer here

[php send mail]

I would filter user given emails using preg_match()

preg_match('/^([0-9a-zA-Z]([-\.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})$/i')

[OnClick link]

Onclick="window.location.href='http://www.example.com'"

 

Is something like that what you had in mind?

[opening .php file in browser]

You need to save your php files into your localhost www file. Should be located at /var/www

[php send mail]

You will want to add another header.

$headers .= 'From: example@example.com' . "\r\n";

[Ajax form submission issue]

Instead of passi variables. Try passing simple strung data to the server.

		$.post("add-client-info.php", { clientname: "clientname", clientcode : "test" }
		function(result){

Also, is your add-client-info.php in the sane dir as your executing script?

[opening .php file in browser]

The message that you reveive tells me that you do not have php properly installed on your localhost server. What directory do you have your php file in

[PHP www.]

I am not an expert on .htaccess

Hecer this sounds like you would need to create a rewrite rule in your htaccess file. Try googling it.

[Ajax form submission issue]

Your submit function looks straightfoward. Have you tried troubleshooting your send_form function.

Also, something I noticed is you are using $_SERVER['PHP_SELF'] as your form action. This should be avoided due to CSS vulnerability. Read here for elaboration.

[fsockopen correct use]

Change this

while (!feof($fp)) {
            $data=true;
            $line=fgets($fp,128);

To

while ($line = fgets($fp,128)) {
            $data=true;

[opening .php file in browser]

Yes you can redstart your apache server using the shell command.

 

sudo /etc/init.d/apache2 restart

[Script auto redirects?]

I would advise to always use long tags. <?php instead of short tags. <? 

To avoid php.ini setting issues on your server. Just a quick tip