The two code snippets presented in this page can be used to output audio MP3 files, or to force the Download, with PHP.
- Click on the code to select it.

Output MP3 with PHP

$mp3 ='path_to/mp3_file.mp3';
if(file_exists($mp3)) {
  header('Content-Type: audio/mpeg');
  header('Content-Disposition: inline; filename="mp3_file.mp3"');
  header('Content-length: '. filesize($mp3));
  header('Cache-Control: no-cache');
  header('Content-Transfer-Encoding: chunked'); 
  readfile($mp3);
  exit;
}

Force Download MP3 file with PHP

$mp3 ='path_to/mp3_file.mp3';
if(file_exists($mp3)) {
  header('Content-Type: audio/mpeg');
  header('Content-Disposition: attachment; filename="mp3_file.mp3"');
  header('Content-length: '. filesize($mp3));
  header('Cache-Control: no-cache');
  header('Content-Transfer-Encoding: chunked'); 
  readfile($mp3);
  exit;
}
- Notice, the only difference is to this header():
header('Content-Disposition: attachment; filename="mp3_file.mp3"');
- "inline" to play the MP3 within the browser (if capabilities exist), and "attachment" to force download.

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which HTML5 tag defines marked text? (can be used to highlight parts of text)
<mark> <embed> <span>
<p>Free corses: <mark>coursesweb.net</mark> for Web Development.</p>
Which CSS pseudo-class adds a style to an element when the mouse is over it?
:focus :hover :active
a:hover {
  font-weight: bold;
  color: #00da01;
}
Click on the function which returns a string value that represents the number rounded to the x digits after the decimal point.
toPrecision(x) toFixed(x) floor(x)
var num = 12.34567;
num = num.toFixed(2);
alert(num);       // 12.35
Indicate the PHP function which reads an entire file into an array.
[) file() readfile()
$arr = file("a_file.txt", FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
var_export($arr);
Output or Force Download MP3 with PHP

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