Loop file from the end?

Question

I have a text file like this

2018-10-09 1

2018-11-12 1

2018-11-13 7

2018-11-15 1

2018-11-18 7

I loop the file to display the result like this

<?php
    $offers = file('logs/offer.txt');
    foreach($offers as $line) {
        $lineArray = explode("\t", $line);
        list($date, $quantity) = $lineArray;
        echo '<tr>      
        <td>' . $date . '</td>
        <td>' .$quantity. '</td>
        </tr>';
    }
?>

I get the result but I want to start from the end of the file and echo the result like this (start with latest date)

2018-11-18 7

2018-11-15 1

2018-11-13 7

2018-11-12 1

2018-10-09 1

I suppose you thought of doing a FOR loop from count($offers)-1 and decrementing the counter instead of incrementing it? — RiggsFolly, Nov 13 '18 at 15:08
Of course if the file may become very large the DUP is probably the best solution — RiggsFolly, Nov 13 '18 at 15:11
You could also say that the data should be in a database, there are a lot of possibilities. — Nigel Ren, Nov 13 '18 at 15:12

Nigel Ren · Answer 1 · 2018-11-13T15:10:49.227

1

You can easily reverse the file contents array using array_reverse() before using foreach...

$offers = file('logs/offer.txt', FILE_IGNORE_NEW_LINES);
$offers = array_reverse($offers);
foreach($offers as $line) {

Note I've also added FILE_IGNORE_NEW_LINES which will take the new line off the end of each row, you can remove it if required.

edited Nov 13 '18 at 15:10

answered Nov 13 '18 at 15:07

Nigel Ren

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I suppose that `array_reverse(array_reverse);` should be `array_reverse($offers)`? – rpm192 Nov 13 '18 at 15:09

Loop file from the end?

1 Answers1