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

Displaying data from database into a 2 dimensional table
Good day!

I'm a beginner in PHP and I'm not expecting a full coding for this qestion. I'm jus

Basic Question Regarding PHP Includes
Hi

Just starting out with PHP.

Working on a site that uses some basic includes, these

Pre-Fill out a PHP form...??
This is for work actually (geek squad). We have to fill out this online php form at work over and ov

FPDF Help
I've been playing with the FPDF module. I was building a form and rolling right along and then sudde

Help With Showing Users On the Index Page
Ive got this code which works just how i want it to.

Code: <?
$timenow=time();

Access database inside of a validation class
Hello,

For quite some time, I have been using functions to validate form input and access the

progress bar...need expert opinion of experienced webmaster
Hey guys, quick question:

I want to display a progress bar when I upload files, but I am not

Display thumbnails as square while retaining aspect ratio
I am trying to figure out a way to make an image display as a square, for example 80x80 pixels, when

Must be a string? Huh, what? HELP?
with the following script, I get
Fatal error: Property name must be a string in /home/content/e/

Help Optimizing code
Good Morning,

I wrote a small import function for a website of mine and I know there has to b

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