Solved

Reordering lines in text file with PHP

Posted on 2008-10-23
4
384 Views
Last Modified: 2012-05-05
Here is an example of the contents of a text file I am using:
------------menu.txt------------------
Home
Specs
Specials
Fishing
Cost
Contact
Pictures
------------------------------------
I need to change the order of these lines using PHP. For example, if someone clicks a 'Move Up' button next to the word "Specials" on a page, it will swap locations with "Specs". If they click a 'Move Down' button, it will swap places within the file with "Fishing".

I would also like to ensure that errors down appear if the item is at the top but they press 'Move up' (and the same for the last item moving down).
0
Comment
Question by:seandolan
  • 2
  • 2
4 Comments
 
LVL 9

Expert Comment

by:Shahzad Fateh Ali
ID: 22794675
Hi,

Here is the php code, try writing javascript for it and it will start working,

// post reordered menu list and write into the file
 
if(isset($_REQUEST['update'])){
	$menu = $_REQUEST['menu'];
	$fp = fopen('menu.txt','w+');
	foreach($menu as $m){
		@fputs($fp,$m);
	}
fclose($fp);
}
 
//read from file and display html
 
$fp = fopen('menu.txt','r');
$menu = array();
while(!feof($fp)){
 
	$menu[] = fgets($fp);
}

Open in new window

0
 
LVL 3

Author Comment

by:seandolan
ID: 22801793
I don't understand how that code moves a line up or down or how it knows what to reorder. Can you please explain it so that I can use this code.
0
 
LVL 9

Accepted Solution

by:
Shahzad Fateh Ali earned 125 total points
ID: 22801925
Here you are.
Cheers

<?
// post reordered menu list and write into the file
 
if(isset($_REQUEST['update'])){
        $menu = explode(',',$_REQUEST['menu']);
        $fp = fopen('menu.txt','w+');
        foreach($menu as $m){
                @fputcsv($fp,array($m),' ',' ');
        }
fclose($fp);
}
 
//read from file and display html
 
$fp = fopen('menu.txt','r');
$menu = array();
while(!feof($fp)){
 
 		$t = trim(fgets($fp));
        if($t != '') $menu[] = $t;
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Reording</title>
<script language="javascript" type="text/javascript">
var menu = ["<?=implode('","',$menu);?>"];
 
	function reorder(index,move){
		var frm = document.getElementById('myForm');
		var inputmenu = document.getElementById('menu');
		
		switch(move){
			case "up":
				if(index == 0) {alert("You cannot move up"); return false;}
				else{
					var tmp = menu[index-1];
					menu[index-1] = menu[index];
					menu[index] = tmp;
					inputmenu.value = menu.toString()
					frm.submit();
				}
				break;
			
			case "down":
				if(index == menu.length-1) {alert("You cannot move down"); return false;}
				else{
					var tmp = menu[index+1];
					menu[index+1] = menu[index];
					menu[index] = tmp;
					inputmenu.value = menu.toString();
					frm.submit();
				}
				break;
		}
	}
</script>
</head>
<body>
<form id="myForm" method="post">
<input type="hidden" id="menu" name="menu" />
<input type="hidden" id="update" name="update" value="1" />
<? $i=0;
	foreach($menu as $value){
?>
<?=$value;?><input type="button" value="Up" onclick="reorder(<?=$i;?>,'up')" /><input type="button" value="Down" onclick="reorder(<?=$i;?>,'down')" /><br />
<?	$i++;}?>
</form>
</body>
</html>

Open in new window

0
 
LVL 3

Author Closing Comment

by:seandolan
ID: 31509548
Thanks! Great answer!
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

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

Suggested Solutions

Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this.Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it is …
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…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.

856 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