[Solved] Do not remove duplicate values from array

by


Just rename your files.

<?php
# define file array
$files = array(
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2017/SSC-II/Chemistry.PDF', 
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2018/SSC-II/Chemistry.PDF', 
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2018/SSC-II/Physics.PDF', 
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2017/SSC-II/Physics.PDF',
);

# create new zip object
$zip = new ZipArchive();

# create a temp file & open it
$tmp_file = tempnam('.', '');
$zip->open($tmp_file, ZipArchive::CREATE);

// Variable to Keep Filenames
$filename="";
// Variable to add "-1, -2" to duplicate files
$i = 1;

# loop through each file
foreach ($files as $file) {
    # download file
    $download_file = file_get_contents($file);

    if ( $filename == basename($file) )
    {
        // If this file already exists add "-1, -2"
        $filename = $i . '-' . basename($file);
        $i++;
    } else 
    {
        $filename = basename($file);
        $i = 1;
    }

    #add it to the zip
    $zip->addFromString($filename, $download_file);
}

# close zip
$zip->close();

# send the file to the browser as a download
header('Content-disposition: attachment; filename="my file.zip"');
header('Content-type: application/zip');
readfile($tmp_file);
unlink($tmp_file);
?>

Edit after @RiggsFolly Comment to support out of order duplicate files

<?php
# define file array
$files = array(
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2017/SSC-II/Chemistry.PDF', 
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2018/SSC-II/Chemistry.PDF', 
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2018/SSC-II/Physics.PDF', 
        'https://www.fbise.edu.pk/Old%20Question%20Paper/2017/SSC-II/Physics.PDF',
);

# create new zip object
$zip = new ZipArchive();

# create a temp file & open it
$tmp_file = tempnam('.', '');
$zip->open($tmp_file, ZipArchive::CREATE);

// Array to keep filenames
$filenames = array();

# loop through each file
foreach ($files as $file) {
    # download file
    $download_file = file_get_contents($file);

    if( array_key_exists( basename($file), $filenames ) )
    {
        $filename =  $filenames[basename($file)] . '-' . basename($file);
        $filenames[basename($file)] = $filenames[basename($file)] + 1;
    } else
    {
        $filename = basename($file);
        $filenames[basename($file)] = 1;
    }

    #add it to the zip
    $zip->addFromString($filename, $download_file);
}

# close zip
$zip->close();

# send the file to the browser as a download
header('Content-disposition: attachment; filename="my file.zip"');
header('Content-type: application/zip');
readfile($tmp_file);
unlink($tmp_file);
?>

5

solved Do not remove duplicate values from array