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

Help If user voted, block them
On my Prayer request site, i let users Click a button to Pray for somone that has posted a pray, i g

Array becomes unset by itself?
Hi,

I have a bit of experience with PHP but not extensive. It seems I cannot store any items

Expandable Post Code
Hi,

Hope you can help. Which currently I haven't upgraded to connect to a mysql server, so i

Paypal
Hi all,

I have an advanced basic knowledge of php

I want to try something new for a s

need to apply an if/else statement to Tim Thumb script
Not sure how to work this. I essentially want to call a variety of image sizes based on which style

check comment for html
hi, I just wanted to check if a comment a user posts contains HTML, and if it does, to not allow it

PHP Upload issue
Hi guys,

I have stumble across an interesting issue with my script and is doing my head in.

How to give the privillege for triggers?
Hi,

How to give the privillage for triggers to particular user?

Please let me

Pagination
Hi All,

I think I'm finally getting somewhere with pagination!

I can now submit a quer

form class help (oop php5)
Hidy Ho Neighbors,

I'm forcing myself to learn oop/classes for php5. It seems like a good id

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