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1-readme.md

Barebones PHP Concat MP3 with LAME

This is a simple PHP script that uses lame to concatenate MP3 files. It does NO error checking beyond what LAME might figure out and also does no shell escaping. I heavily advise against using this in any production capacity and would also advise it only be used as a baseline minimal viable product to build upon.

Syntax

php concat.php [input files ...] [output file]

Examples

Concatenate two MP3 files: php concat.php low.mp3 high.mp3 merged.mp3

Concatenate an entire directory: php concat.php *.mp3 merged.mp3

concat.php

<?php

// Take script name out of argv[0]
array_shift($argv);
$output = array_pop($argv);

// Get filenames
$files = $argv;

// Build command
$command = sprintf(
    'for f in %s; do lame --decode --mp3input $f -; done | lame -a -b 96 - %s',
    implode(' ', $files),
    $output
);

// Run that command
exec($command);