phpECard v2.0, a small app. to set up your own e-card gall.

<?php
/***************************************************************************
 *  functions.php                                   script-name: phpECard  *
 *  ---------------------------------------------------------------------  *
 *  version                  : 2.0                                         *
 *  script suport page       : http://quick-xs.net/phpecard                *
 *  author email             : [email protected]                        *
 *                                                                         *
 ***************************************************************************
 *                                                                         *
 *  The complete functionality of the script is defined in this file.      *
 *  ANYTHING YOU EDIT HERE CAN PREVENT THE SCRIPT FROM WORKING             *
 *                                                                         *
 ***************************************************************************/

// First lets perform some required actions

	// Function to make links in gallery
	function makelink($image_name) 
	{
		global $language;

		global $PHP_SELF;

		global $preset_vars;

		if (file_exists($include_path.'lang_'.$language.'.php'))
		{
			$language_preset = 'language='.$language.'&';
		}

		return $PHP_SELF.'?'.$preset_vars.$language_preset.'card='.$image_name; 
	}


	// Check language, else get default language file [TRYOUT]
	if (file_exists($include_path.'lang_'.$language.'.php'))
	{
		include($include_path.'lang_'.$language.'.php'); 
	}
	else 
	{ 
		include($include_path.'lang_'.$default_language.'.php'); 
	}


	// Make sure that $action always is "compose" if not "send"
	if ($action != 'send') 	
	{ 
		$action = 'compose'; 
	}


	// function to test email-syntax, used later on
	function IsEmail($mail) 
	{ 
		return ereg("[A-Za-z0-9_-]+([.]{1}[A-Za-z0-9_-]+)*@[A-Za-z0-9-]+([.]{1}[A-Za-z0-9-]+)+", $mail); 
	}


// check to see weither an id is defined
if ((IsSet($id)) && ($id != '')) 
{
	// Check to see if id-datafile is present
	if(file_exists($include_path.'userdata/'.$id.'.php')) 
	{ 
		// Include the datafile and send confirmation back to sender if wanted
		include($include_path.'userdata/'.$id.'.php');

		if ($notify_sender == 'on') 
		{
			$comeback_url = 'http://'.$_SERVER['SERVER_NAME'].$PHP_SELF;

			$notify_mail_sender = $lang['dear'].' '.$sender_name.','."nn".$recipient_name.' ('.$recipient_email.')'.$lang['recipient_has_seen']."nn".$lang['please_come_back']."n".$comeback_url."nn".$lang['regards']."nn$service_name (".$admin_email.')'.$add;

			mail($sender_email,$recipient_name.$lang['notify_sender_subject'],$notify_mail_sender,"From: $service_name<$admin_email>");

			$CRD_datafile = 
				'<?php 
				$notify_sender = "off"; 
				$subject = "'.htmlspecialchars($subject).'"; 
				$sender_name = "'.htmlspecialchars($sender_name).'"; 
				$sender_email = "'.$sender_email.'"; 
				$recipient_name = "'.htmlspecialchars($recipient_name).'"; 
				$recipient_email = "'.$recipient_email.'"; 
				$date = "'.$date.'"; 
				$time = "'.$time.'"; 
				$card = "'.$card.'"; 
				$msg = "'.htmlspecialchars(stripslashes($msg)).'";
				$index_url = "'.$index_url.'"; 
				?>';

			fwrite(fopen($include_path.'userdata/'.$id.'.php',"w"),$CRD_datafile);
		}

		$card_info = $lang['card_to'].' <u>'.$recipient_name.'</u> - '.$lang['sent_at'].' '.$date.', '.$lang['at'].' '.$time.$lang['hour'];

		$template = 'view';

		include($include_path.'template.php');
	}

	// else id is not present
	else 
	{
		$template = 'id_error';

		include($include_path.'template.php');
	}

}

// So if no id is defined... lets see weither to send or to compose?
else
{
	if ($action == 'send')
	{
		// Check the variables for IsSet & syntaxis:
		if ($subject == '') 
		{ 
			$error1 = $lang['enter_subject'].'<br><br>'; 
		}

		if (($msg == '') or ($msg == $lang['type_msg'])) 
		{ 
			$error2 = $lang['enter_msg'].'<br><br>'; 
		}

		if (($sender_name == '') or ($sender_name == $lang['name_here'])) 
		{ 
			$error3 = $lang['enter_sender_name'].'<br><br>'; 
		}

		if ((!IsEmail($sender_email)) or ($sender_email == '')) 
		{ 
			$error4 = $lang['enter_sender_email'].'<br><br>'; 
		}

		if ($recipient_name == '') 
		{ 
			$error5 = $lang['enter_recipient_name'].'<br><br>'; 
		}

		if ((!IsEmail($recipient_email)) or ($recipient_email == '')) 
		{ 
			$error6 = $lang['enter_recipient_email'].'<br><br>'; 
		}

		$error = $error1.$error2.$error3.$error4.$error5.$error6;

		if ($error == '')
		{
			// So the form is submitted and there are no errors
			// ... now we can save the data and email the recipient

			$teller = fread(fopen($include_path.'userdata/teller.txt',"r"),4096) + 1;

			fwrite(fopen($include_path.'userdata/teller.txt',"w+"),$teller);

			$id = 'CRD'.date("ymdHi").$teller;

			$CRD_datafile = 
				'<?php 
				$notify_sender = "'.$notify_sender.'"; 
				$subject = "'.htmlspecialchars($subject).'"; 
				$sender_name = "'.htmlspecialchars($sender_name).'"; 
				$sender_email = "'.$sender_email.'"; 
				$recipient_name = "'.htmlspecialchars($recipient_name).'"; 
				$recipient_email = "'.$recipient_email.'"; 
				$date = "'.date("d-m-Y").'"; 
				$time = "'.date("H:i").'"; 
				$card = "'.$card.'"; 
				$msg = "'.htmlspecialchars(stripslashes($msg)).'";
				$index_url = "http://'.$_SERVER['SERVER_NAME'].$PHP_SELF.'"; 
				?>';

			fwrite(fopen($include_path.'userdata/'.$id.'.php',"w+"),$CRD_datafile);

			$notify_mail_recipient = $lang['dear_recipient']."nn".$lang['sender_has_sent']."nn". $lang['get_card_here'] ."n".'http://'.$_SERVER['SERVER_NAME'].$PHP_SELF.'?id='.$id."nn". $lang['time_limit']."nn". $lang['regards'] ."nn$service_name (".$admin_email.')'.$add;

			mail($recipient_email,$lang['notify_recipient_subject'],$notify_mail_recipient, "From: E-Card service<$admin_email>");

			if ($notify_sender == 'off') 
			{ 
				$lang['card_viewed_confirm'] = ''; 
			}

			$template = 'sent';

			include($include_path.'template.php');
		}

		// Else if no sending is wanted or if there are errors ...
		elseif ($error != '')
		{
			$action = 'compose';
		}

	}

	if ($action == 'compose')
	{
		if ((!IsSet($card)) or ($card == ''))
		{
			// Show gallery
			include($include_path.'_gallery.php');
		}

		else
		{
			// Check input fields for IsSet, if not assign defaults
			if ((!IsSet($msg)) or ($msg == '')) 
			{
			$msg_echo = $lang['type_msg']; 
			}

			else 
			{
			$msg_echo = $msg; 
			}

			if ((!IsSet($sender_email)) or ($sender_email == '')) 
			{
			$sender_email_echo = $lang['email_here']; 
			}

			else 
			{
			$sender_email_echo = $sender_email; 
			}

			if ((!IsSet($sender_name)) or ($sender_name == '')) 
			{
			$sender_name_echo = $lang['name_here']; 
			}

			else 
			{
			$sender_name_echo = $sender_name; 
			}

			// Include compose-template

			$template = 'compose';

			include($include_path.'template.php');
		}

	}

}

?>