Preventing blank or already entered values


Posted on 16th Feb 2014 07:03 pm by admin

Im trying to learn how to place a read file line by line and prevent duplicate entries and also BLANK entries, into my process php script,

using feof, I have failed many times and get so many errors such as syntax expecting . or , and so forth
this is my process.php
<?php
$File = "links.txt";
$Handle = fopen($File, 'a');
$Data = "".$_POST['ID'];
fwrite($Handle, $Data."n");
print "Data Addedn";
fclose($Handle);
?>


<?php
countLines("links.txt");
function countLines($filepath)
{
$handle = fopen( $filepath, "r" );
$count = 0;
while( fgets($handle) )
{
$count++;
}
fclose($handle);
return $count;
}

?>
<head>
<meta http-equiv="REFRESH" content="5;test1.php"></HEAD>

please wait... navigating back!



I got fed up and deleted all my work, to start from scratch,

if feof($_POST['ID'])
{
alert 'Already entered';
return;
}
that was just one of my attempts
also im unsure if putting in /n would make it look for /n or new line, if it looks for new line and every file has the new line marker would it always return as the data was already entered?

Thanks in advance for assistance/teaching

No comments posted yet

Your Answer:

Login to answer
241 Like 9 Dislike
Previous forums Next forums
Other forums

getting Vars to pass to next page.
Hello all,
I have a confusing situation on my hands, i am a member of a gaming community and we

Problem with PHP code- simple contact form
Hi Folks,
I'm relativily new to PHP; I know HTML and CSS stuff but I have a problem- I have a co

Warning: session_start() [function.session-start]: Cann.....
hi, can someone help me with this? I keep getting this error....

Warning: session_start() [fu

HTML form problem
Ive made a form to that i want to send to my email via PHP. but when it send only the name's etc sen

Ajax Issues - Update Panel / Timer. Intellisense doesn't know about them
Type 'System.Web.UI.ScriptManager' does not have a public property named 'UpdatePanel'. That is wha

Form validation with functions
Hi there

I am trying to make a very simple form validation function. I currently have the fol

Concatenate two strings ???
I have string one $string1 and another $string2.

How to concatenate (add) both of them $str

Display Database
I need to create a shopping cart. I found this code online: http://conceptlogic.com/jcart/
Unfort

Adding post count
How would I make it so everytime someone clicks submit on my form, their row in the database for the

Working with popups and such in a class
I've recently started building my applications completely enclosed in classes. I like the fact that

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



 
© indyaspeak.com. All Rights Reserved.
Play Free Quiz and Win Cash