Solved

Looping through the contents of a CSV

Posted on 2009-07-14
6
228 Views
Last Modified: 2012-05-07
I need to loop through the contents of a CSV and pass the values of columns 1 and 6 to a function which then does something with the values, the program should then move to the next row of the csv and grab the same column values and pass those to my function. The program should loop 10 times. Once the loop is complete the first 10 rows of the scv should be deleted.

Can someone help please?

0
Comment
Question by:MayoorPatel
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
6 Comments
 
LVL 14

Expert Comment

by:flob9
ID: 24849294
this is a repost to this one : http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_24568102.html


<?php
 
//read the data
$lines = split("\n",file_get_contents("file.csv"));
 
 
//parse first 10 lines
$cnt = 0;
foreach($lines as $line)
{
  list($col1,$col2,$col3,$col4,$col5,$col6) = split(";",$line);
  //for each line, call my_func
  my_func($col1,$col2,$col3,$col4,$col5,$col6);
  $cnt++;
  if($cnt==10)
    break;
}
//once done, put the remaining data back into the csv file
if(count($lines)>$cnt)
	file_put_contents("file.csv",join("\n",array_slice($lines,10)));
 
?>

Open in new window

0
 
LVL 9

Expert Comment

by:xBellox
ID: 24849323
Try this (Remeber to change 'test.csv' to your file name, change ";" to your csv delimiter    and your_function to your function name):



<?
	$filename = 'test.csv';
	$f = file($filename);
	
	for ($i=0; ($i<10 && $i<count($f)); $i++) {
		$columns = explode(";", $f[$i]);
		your_function($f[0],$f[1],$f[2],$f[3],$f[4],$f[5]);
	}
	
?>

Open in new window

0
 
LVL 9

Accepted Solution

by:
xBellox earned 500 total points
ID: 24849402
Oops... Little mistake... It isn't $f[0], $f[1]... It ss $columns[0].$columns[1]

<?
		$filename = 'test.csv';
        $f = file($filename);        
        for ($i=0; ($i<10 && $i<count($f)); $i++) {
                $columns = explode(";", $f[$i]);                 
				your_function($columns[0],$columns[1],$columns[2],$columns[3],$columns[4],$columns[5]);
        }      
		if(count($f)>=$i) file_put_contents($filename,join("\n",array_slice($f,10)));
?>

Open in new window

0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 1

Author Comment

by:MayoorPatel
ID: 24849826
Flob your solution was NOT complete
0
 
LVL 1

Author Closing Comment

by:MayoorPatel
ID: 31603238
Bravo!
0
 
LVL 14

Expert Comment

by:flob9
ID: 24850940
I don't see the difference
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Developers of all skill levels should learn to use current best practices when developing websites. However many developers, new and old, fall into the trap of using deprecated features because this is what so many tutorials and books tell them to u…
Password hashing is better than message digests or encryption, and you should be using it instead of message digests or encryption.  Find out why and how in this article, which supplements the original article on PHP Client Registration, Login, Logo…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question