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
Did you know?Explore Trending and Topic pages for more stories like this.
<?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

Forms Authentication and Refresh at Login page
Hello, When I try to press the Login button in my webapplication at my login.aspx page nothing h

Deleting Partners on the Customer Master.
Does SAP handle removing the Partner from Open Sales Orders when a Partner is deleted in the Custome

WHYISNT THIS MYSQL STATEMNT NOT WORKING? (php)
caps because its absolutely rediculous.
i dontunderstand why its not working. there is a column c

What am I missing here? Help!
Hello all!. I can't seem to get this working right. Well - it renders right, but something is goin

help with mysql_error()
Hi,

I am trying to insert data into a table, but I am not able to insert it. I wanted to see

Port scanner problem
Hai
recently i developed one app through which u can check the opened and closed ports under an

New to Arrays
Hi I am new to PHP (a week and a half now) and I am just beginning to read about arrays. I understan

Saving data from a form into a file
Hey everybody,

Sorry, I am really new to PHP coding and such but a project kind of got thrust

connect() succeeds but accept() does not?
Please help me with this problem. I'm working on a time-sensitive project where I'm using TCP socket

Is this Safe or Unsafe?
Hi i made a few pages with lots of peoples help now i just want to know if they are safe or not can

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



Play Free Quiz and Win Cash