Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Looping through the contents of a CSV

Posted on 2009-07-14
6
Medium Priority
?
233 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 2000 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
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 
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

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Build an array called $myWeek which will hold the array elements Today, Yesterday and then builds up the rest of the week by the name of the day going back 1 week.   (CODE) (CODE) Then you just need to pass your date to the function. If i…
This article discusses four methods for overlaying images in a container on a web page
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.

721 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