[SOLVED] php verification help

[fonecave]

i have this code to add a user to a text document and am tryin to write it so that the user cant register an address that is already in the document but it only stops if the email address is typed in as nothing (blank) else it carries on and adds the lines anyway.

 

code is here

http://fonecave.110mb.com/code.txt

 

website is at http://fonecave.110mb.com/index.html

[darkfreaks]

this will check for a valid email adress.

<?php

function  checkEmail($email) {
if (!preg_match
("/^( [a-zA-Z0-9] )+( [a-zA-Z0-9\._-] )*@
( [a-zA-Z0-9_-] )+( [a-zA-Z0-9\._-] +)+$/" , $email)) {
  return false;
}
return true;
}?>

 

 

checking to see if  email is already in database

 

<?php
$SQL = "SELECT * FROM email WHERE email = $email";
$result = mysql_query($SQL);
$num_rows = mysql_num_rows($result);
if ($num_rows > 0) {
echo "This email is already in use";}
?>

[atlanta]

You might want to use a database it is much easier to manage than using flatfile

[darkfreaks]

agreed store the email in a database field and use the following code using mysql_num_rows to check for the same occuring adress.

[MadTechie]

try this,

<?php
//$checkline="checkline"; //unused
$name=$_POST["name"];
$address=$_POST["address"];

if(empty($name) || empty($address))
{
echo "Please Enter name and email";
die;
}
//darkfreaks email checker
if (!preg_match("/^( [a-zA-Z0-9] )+( [a-zA-Z0-9\._-] )*@( [a-zA-Z0-9_-] )+( [a-zA-Z0-9\._-] +)+$/" , $address))
{
echo "Error, email not valid";
die;
}

$namelen=strlen($name);
if ($namelen<5)
{
echo "Error, name entered is under 5 characters long.";
die;
}

$efile=fopen("eregistrations.txt","a+") ;
if ($efile)
{
    $inuse = false;
    while ( !feof($efile) && !$inuse)
    {
        $f_name = trim(fgets($efile));
        $f_address = trim(fgets($efile));

        if($f_name == $name)
        {
        	echo "user '$name' is already used<br>\n";
		$inuse = true;
        }
        if($f_address == $address)
        {
        	echo "email '$address' is already used<br>\n";
		$inuse = true;
        }
    }
    if(!$inuse)
    {
	fwrite ($efile, $name . "\n");
	fwrite ($efile, $address . "\n");
	echo"Registration Succesful, Thank you $name";
	echo"<br>You will be one of the first to recieve all of our amazing offers!<br>" ;
	echo"You will recieve your username and password soon, Check your inbox.<br>" ;
	echo"Please click your browsers back button to return to fonecave.<br>" ;
    }
    fclose($efile);
}


?>

[darkfreaks]

thanks tech im not that familiar with read and w rite functions yet mainly database stuff

[fonecave]

thanks guys that was great!

the code works perfectly except the email preg_match function

i had to tweal the code a little now it works perfect (touch wood

cheers

[darkfreaks]

your welcome click solved