PHP / FGETS problem

I am currently using FGETS to read through a file, but I seem to have an odd problem - its missing lines? - it looks like for every 1 line it displays, it skips the next 2 lines

The input file is an excel CSV (basically plain text) - but i'm wondering if that could be my issue.

The CSV data has only one column, so has no commas and looks like this:

DataLine1 has 50ish chars
Dataline2 has 50ish chars
Dataline3 has 50ish chars
Dataline4 has 50ish chars
Dataline5 has 80ish chars
Dataline6 has 80ish chars
Dataline7 has 80ish chars
Dataline8 has 80ish chars


The code I am using to read it is as follows:

$file = fopen("files/tempfile.csv", "r") or exit("Unable to open file for reading!");
		 while(!feof($file))
		   {
			   			echo fgets($file) . "</br>";
}
fclose($file);

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The output I get is like this:

DataLine1 has 50ish chars
Dataline4 has 50ish chars
Dataline7 has 80ish chars

Any ideas how I can get it to read the file properly, without missing most of the data?

Thanks
BergstrAsked:
Who is Participating?
 
Amar BardoliwalaConnect With a Mentor Commented:
Hello Bergstr,

Please store your current line in some variable first and use that like following

while(!feof($file))
   {
        $line =  fgets($file);
   
        echo $line. "<br />";

        fwrite($newfile, $line);
   }

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currently it seems you are using fgets directly to print and it seems that it might echo first line and add second line in file..
so I can say that in while loop you are fetching 2 lines at a time.
because each time to write fgets it will fetch 1 line from file.

Hope this will help you.

Thank you.

Amar Bardoliwala
0
 
ienaxxxCommented:
Try fgets($file, 4096).
0
 
BergstrAuthor Commented:
Nope, still have the same problem...
0
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ienaxxxConnect With a Mentor Commented:
OK then, try this:

ini_set('auto_detect_line_endings', true);
file = fopen("files/tempfile.csv", "r") or exit("Unable to open file for reading!");
		 while(!feof($file))
		   {
			   			echo fgets($file) . "</br>";
}
fclose($file);

Open in new window

0
 
Amar BardoliwalaCommented:
Hello Bergstr,

can you please give your original file that you are trying ?

it should help to resolve the problem.

Thank you.

Amar Bardoliwala
0
 
BergstrAuthor Commented:
Think I found my problem - I didn't put the additional code before or after that section in my post, but it appears to be relevant (sorry!)

I'm trying to read from the old file, validate that data (and change it if needs be) then write the data to another file - and that seems to be my problem!


$file = fopen("files/tempfile.csv", "r") or exit("Unable to open file for reading");
$newfile = fopen("files/newfile.csv", 'w') or exit("Unable to open file for writing");
 //Output a line of the file until the end is reached
 while(!feof($file))
   {
   echo fgets($file). "<br>";
   fwrite($newfile, fgets($file));
   }
 fclose($file);
 
}

Open in new window


If I remove the fwrite line, it works fine - soon as I add the one line lines start disappearing!

I guess the new question is, how do I read one file while writing that data back to another, without losing data?

Sorry for being a pain, and thanks for the responses!
0
 
BergstrAuthor Commented:
That seems to have worked, thanks for your help!

I'll accept the above as the solution but also share the points with ienaxxx s they did try and help when my original question didn't provide full details!

Thanks both!
0
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