How to count different lines

How to count different lines?

So I mean if I have "something.txt" and there is 10 lines where is four lines printed "X" and six lines printed "B" it should count "2".


Understand?

Thanks!

 

if file not big, then
<?
$lines = file('something.txt');
sort($lines);
$cnt = count($lines);
$res=($cnt)?1:0;
for($i=1; $i<$cnt; $i++) {
if ($lines[$i]!=$lines[$i-1]) $res++;
}

echo $res;
?>

it's idea, didn't tested it though, but must work

 

just an idea

read the file with file command

$lines = file('something.txt');

PHP:

now the all line are in the $lines array

let's say the value of array look like this

lines=array("Mango","Banana","Orange","Banana"); 
$new_array=array_unique($lines); 

PHP:

Remove the duplicate lines with unique_array function
Now our $new_array will contain values ("Mango","Banana","Orange")

$unique_lines = count($new_array);

PHP:

$unique_lines is What you require

 

Thank to you guys!

Ravish´s idea will work.



I have also another question which will make my script a lot easier..

Is there possibility to count only something from lines in "something.txt"?
I mean I have all of the lines first "X" or "B" or "C" and then comes " - " and the line continues.
So one line looks like:

X - something...

Can I count everything what comes before " - " ?


Thanks!

 

I made a code but it doesn´t work.

<?php
$file = "recordlist.txt";

$i = 0;
while ($i <= count($file) - 1 ) {

$pum = explode(" - ", $file[$i]);

$bands = file($pum[1]);
$bands_array = array_unique($bands);
$unique_bands = count($bands_array);


$lines = count(file($file));
print "CDs: $lines<br /><br />";
echo "Different bands: $unique_bands<br /<br />";

$i++;
}

$list = file('recordlist.txt');
sort($list);

for ($i=0; $i <= $lines; $i++)
echo $list[$i]."<br \>";
?>

It prints just "1" for $unique_bands

Can you help me guys? Thanks a lot!

 

this seems confusing to me
Please put the file contents and let me know what the script to do.

I can write one quick for you and will be explaining what it is doing at every step

Ravish

 

I have a code with my CDlist. (It's not the one above)
It makes strings to recordlist.txt file like this:

Iron Maiden - 1981 - Killers
Iron Maiden - 1982 - The Number of the Beast
Judas Priest - 1990 - Painkiller
Motörhead - 1979 - Overkill

etc etc

So. Counting how much CDs I have (lines in the recordlist.txt) is easy, but also I need to count how many different artist there is!
It works if I $_POST["artist"] also to other .txt file (bands.txt) and count unique lines from there.

But I think there should be easier way which counts unique lines before first " - " in recordlist.txt.


Thanks to you Ravish, hope you understand what I mean

 

It would probably be easier to load the file contents into a string and use regular expression to get all artist names.

preg_match_all('/(?:^|\n)([^-]+)/', $file_contents, $artists);

// Different artists
echo sizeof(array_unique($artists[1]));

PHP: