Php-mysql Course

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 is indicated to be used as container for menu with navigation links in Web site?
<section> <nav> <article>
<nav><ul>
 <li><a href="http://coursesweb.net/css/" title="CSS Course">CSS Course</a></li>
 <li><a href="http://www.marplo.net/jocuri/" title="Flash Games">Flash Games</a></li>
</ul></nav>
Which CSS property shifts an item horizontally to the left or right of where it was?
text-align clear float
.some_class {
  width: 30%;
  float: left;
}
Click on the Math object method which returns x, rounded downwards to the nearest integer.
Math.ceil(x) Math.abs(x) Math.floor(x)
var num = 12.34567;
num = Math.floor(num);
alert(num);       // 12
Indicate the PHP function which returns the number of characters in string.
mb_strlen() count() stristr()
$str = "string with utf-8 chars åèö";
$nrchr = mb_strlen($str);
echo $nrchr;        // 30
Output or Force Download MP3 with PHP

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