PHP将数字从高到低排序？

Question

So my Php gets Javascript vars and then sends them to a file called LeaderBoard.txt What I want the Php to do is when it sends the information to the .txt file I want it so the scores are sorted from highest to lowest...

so if in the .txt file there is

1. score: 5
2. score: 3

and the score that is being posted is "score: 4" I want the php to put it in this posistion:

1. score: 5
2. score: 4
3. score: 3

Iv no idea how to do it so how could i do it? and how can i implement it into my existing code? Thanks for reading :) and heres my php so far:

<?php 

$hiScore = $_POST['hiScore'] ? $_POST['hiScore'] : 'not set';

$theInput = $_POST['theInput'] ? $_POST['theInput'] : 'not set';

$file = fopen('LeaderBoard.txt','a+');
fwrite($file, ' Name: '.$theInput.'                                        Score: '.$hiScore.'                         '.PHP_EOL);
fclose($file);


?> 

I'm a really newby with php and its a stuggle so sorry if this seems a silly question

Answer 1

I ended up doing it like this:

<?php 

$hiScore = $_POST['hiScore'] ? $_POST['hiScore'] : 'not set';

$theInput = $_POST['theInput'] ? $_POST['theInput'] : 'not set';

$file = fopen('LeaderBoard.txt','a+');
fwrite($file, ' '.$hiScore.' - Score                                                      Name: '.$theInput.'      '.PHP_EOL);
fclose($file);

$lines = file("LeaderBoard.txt");
natsort($lines);
$lines=array_reverse($lines);
file_put_contents("LeaderBoardScores.txt", implode("\n  \n", $lines));
?> 

Answer 2

Use ksort ... ksort is used to sort an array element from lowest to highest. You can use other sorting functions in php through the below link. enter link description here