Undefine index error in PHP

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I have a table called download_manager .It has two columns filename and downloads .What I want to do is to get file name and its download count and display them inside ul element.
I am able to get file names but I cant display the download count I'm getting undefined index error.This is my code

What I have tried:

<?php 
    $handle = opendir($directory) or die('Error'); 
    $files = array(); 
    while ($file = readdir($handle)) { 
        if ($file[0] == '.') { 
            continue; 
        } 
        $files[] = $file; 
    } 
    sort($files, SORT_STRING); 
    $query = 'select * from download_manager'; 
    $data = mysqli_query($link, $query); 
    $fileInfo[] = array(); 
    if (mysqli_num_rows($data)) { 
        while ($singleFile = mysqli_fetch_array($data)) { 
            $fileInfo[$singleFile['filename']] = $singleFile['downloads']; 
        } 
    } 
    ?> <!DOCTYPE html> <html> <head> </head> <body> <ul> <?php 
    foreach ($files as $key => $value) { 
         echo '<li><a href="download.php?file='.urlencode($value).'">'.$value.'</a> <span>'.$fileInfo[$value].'</span> '; 
    } 
    ?> </ul> </body> </html>

Posted 4-Oct-18 9:23am

Member 3722539

Updated 4-Oct-18 18:08pm

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Comments

Patrice T 4-Oct-18 17:03pm

Show exact error message and line number.

Member 3722539 5-Oct-18 6:42am

thank you

1 solution

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Bryian Tan · Accepted Answer · 2018-10-04T18:08:00

By looking at the posted code, Very likely the filename in the directory and download_manager table are mismatch.

Example:
let say this is download_manager table

Filename 	Downloads
abc	             10		
xyz.txt	         20

let say these are the files in the directory

Directory
abc.txt
xyz.doc

based on the code

$fileInfo["abc.txt"] --> Undefined index error
$fileInfo["xyz.doc"] --> Undefined index error