Your best bet would be using the [RFC defined][1] mime-type `audio/mpeg`.


  [1]: https://www.rfc-editor.org/rfc/rfc3003

&lt;p&gt;I had a problem with mime types and where making tests for few file types. It looks like each browser sends it&#39;s variation of a mime type for a specific file. I was trying to upload mp3 and zip files with open source php class, that what I have found:&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Firefox (mp3): audio/mpeg&lt;/li&gt;
&lt;li&gt;Firefox (zip): application/zip&lt;/li&gt;
&lt;li&gt;Chrome  (mp3): audio/mp3&lt;/li&gt;
&lt;li&gt;Chrome  (zip): application/octet-stream&lt;/li&gt;
&lt;li&gt;Opera   (mp3): audio/mp3&lt;/li&gt;
&lt;li&gt;Opera   (zip): application/octet-stream&lt;/li&gt;
&lt;li&gt;IE      (mp3): audio/mpeg&lt;/li&gt;
&lt;li&gt;IE      (zip): application/x-zip-compressed&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;So if you need several file types to upload, you better make some tests so that every browser could upload a file and pass mime type check.&lt;/p&gt;

Use `.mp3 audio/mpeg`, that&#39;s the one I always used. I guess others are just aliases.

You should always use **audio/mpeg**, because firefox cannot play **audio/mpeg3** files

The [standard][1] way is to use `audio/mpeg` which is something like this in your PHP [header][2] function ...

`header(&#39;Content-Type: audio/mpeg&#39;);`


  [1]: https://www.rfc-editor.org/rfc/rfc3003
  [2]: http://php.net/manual/en/function.header.php

mp3 files sometimes throw strange mime types as per this answer: https://stackoverflow.com/a/2755288/14482130

If you are doing some user validation do not allow &#39;application/octet-stream&#39; or &#39;application/x-zip-compressed&#39; as suggested above since they can contain be .exe or other potentially dangerous files.

In order to validate when mime type gives a false negative you can use fleep as per this answer https://stackoverflow.com/a/52570299/14482130
to finish the validation.

From reading [this post][1] I have found that there are some pseudo classes for &#39;valid&#39; and &#39;invalid&#39; input values introduced to HTML5.

Is there a way I can mark an input field as invalid/valid from javascript? Or alternatively, can I override the validation method used?


  [1]: http://html5doctor.com/css3-pseudo-classes-and-html5-forms/

Can I mark a field invalid from javascript?

I have an `Email` document which has a `sent_at` date field:

    {
      &#39;sent_at&#39;: Date( 1336776254000 )
    }

If this `Email` has not been sent, the `sent_at` field is either null, or non-existant.

I need to get the count of all sent/unsent `Emails`. I&#39;m stuck at trying to figure out the right way to query for this information. I think this is the right way to get the sent count:

    db.emails.count({sent_at: {$ne: null}})

But how should I get the count of the ones that aren&#39;t sent?

MongoDB: How to query for records where field is null or not set?

I&#39;m trying to decide which mime type to choose for returning mp3 data (served up by php)

according to this listing of mime types: http://www.webmaster-toolkit.com/mime-types.shtml

    .mp3 	audio/mpeg3
    .mp3 	audio/x-mpeg-3
    .mp3 	video/mpeg
    .mp3 	video/x-mpeg

What are the difference between these, and which should I use?

Which mime type should I use for mp3

I'm trying to decide which mime type to choose for returning mp3 data (served up by php)
according to this listing of mime types: <a href="http://www.webmaster-toolkit.com/mime-types.shtml" target="_blank" rel="noopener noreferrer">http://www.webmaster-toolkit.com/mime-types.shtml</a>
<pre><code class="hljs language-bash">.mp3 	audio/mpeg3
.mp3 	audio/x-mpeg-3
.mp3 	video/mpeg
.mp3 	video/x-mpeg
</code></pre>
What are the difference between these, and which should I use?

I have some php array keys that are populated with a lot of weird characters.

Is this allowed? Are there any constraints to what I cannot use?

Characters allowed in php array keys?

I have my site on the server `http://www.myserver.uk.com`.

On this server I have two domains:

```lang-none
one.com and two.com
```

I would like to get the current domain using PHP, but if I use `$_SERVER[&#39;HTTP_HOST&#39;]` then it is showing me

```lang-none
myserver.uk.com
```

instead of:

```lang-none
one.com or two.com
```

How can I get the domain, and not the server name?





Get current domain

This might appear to be a dupe, but rest assured it isn&#39;t - I have searched both SO as well as the rest of the web for an answer to my problem and ended up finding the same insufficient &quot;solutions&quot; over and over. Anyhow, here it goes:

I&#39;m saving user input from a textarea to a MySQL database (within a WordPress environment, but that ought not to matter to this problem, I believe). It is later retrieved from the DB to be shown to Admins in the backend of the site. The problem occurs when users submit text with line breaks (i.e. hit the Enter key).

A sample string might look like this:

    Dear friends, I just wanted so Hello. How are you guys? I&#39;m fine, thanks!

    Greetings,
    Bill

There are no end of line characters (&quot;\n&quot;, &quot;\r&quot;, or the like) in the string.

I am using `nl2br()` on it to generate HTML output, but that&#39;s not enough. The result then is:

    Dear friends, I just wanted so Hello. How are you guys? I&#39;m fine, thanks!&lt;br /&gt;
    &lt;br /&gt;
    Greetings,&lt;br /&gt;
    Bill

Which, as far as I understand it, is the expected `nl2br()` result, as that inserts the tags and isn&#39;t supposed to replace the line-breaks in the first place?

However the format I need would be this:

    Dear friends, I just wanted so Hello. How are you guys? I&#39;m fine, thanks!&lt;br /&gt;&lt;br /&gt;Greetings,&lt;br /&gt;Bill

If the string had EOL characters such as &quot;\n&quot; in it, I&#39;d hit it with either `str_replace()` or `preg_replace()` and be done with it, but I have no clue what needle to feed either of those functions if there ain&#39;t no characters there in the first place.

I can manually access the relevant field in the DB, hit Backspace for every linebreak and what I later on want to do with the string works. So I know I need the above format.

How to remove line breaks (no characters!) from the string?

In PHP I&#39;m getting the following warning whenever I try to connect to a database (via `mysql_connect`)

&gt;Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50162 Library:50524

In my `php -i` output I have the following values listed under mysqli

&gt; Client API library version =&gt; 5.5.24
&gt;
&gt; Client API header version =&gt; 5.1.62

I&#39;ve tried updating php5-mysql *and* php but I&#39;m already at the latest version of both of them. How do I go about updating the header version so I stop seeing this warning?

**EDIT**

My MySQL files should all be updated to be the latest version:

    $ apt-get install mysql.*5.5
    . . .
    mysql-client-5.5 is already the newest version.
    mysql-server-core-5.5 is already the newest version.
    mysql-server-5.5 is already the newest version.
    mysql-testsuite-5.5 is already the newest version.
    mysql-source-5.5 is already the newest version.

Removing old versions

    $ apt-get remove mysql.*5.1
    . . .
    Package handlersocket-mysql-5.1 is not installed, so not removed
    Package mysql-cluster-client-5.1 is not installed, so not removed
    Package mysql-cluster-server-5.1 is not installed, so not removed
    Package mysql-client-5.1 is not installed, so not removed
    Package mysql-client-core-5.1 is not installed, so not removed
    Package mysql-server-5.1 is not installed, so not removed
    Package mysql-server-core-5.1 is not installed, so not removed
    Package mysql-source-5.1 is not installed, so not removed

Headers and client library minor version mismatch

I have a problem with phpmyadmin on ubuntu 12.04.
I have already installed apache2, php5, mysql and phpmyadmin.

The `phpinfo();` script, don&#39;t show nothing about mysqli or mysql extension.

When I try start phpmyadmin this error appear:

&lt;pre&gt;
----
**phpMyAdmin - Error**
-------
**The mysqli extension is missing. Please check your PHP configuration.**
----
&lt;/pre&gt;

In the php.ini file, I uncommented `extension=mysql.so` line, but doesn&#39;t work...

Anyone have another posible solution?


Extension mysqli is missing, phpmyadmin doesn&#39;t work

Can I overlay/downmix two audio mp3 files into one mp3 output file using ffmpeg?

How to overlay/downmix two audio files using ffmpeg

I am developing a `WinForm` application. I want to play a MP3 file when the user clicks a button.  

The MP3 file is located in the file system of the computer where the application is executed.  
I have Googled for a while and I have found information about the `System.Media.SoundPlayer` class. But I have read that the `SoundPlayer` class can only be used to play files in .wav format.  

What classes can be used to play files in .mp3 format ?

Any help will be greatly appreciated.

Playing a MP3 file in a WinForm application

I want to play my song (mp3) from python, can you give me a simplest command to do that?

This is not correct:

    import wave
    w = wave.open(&quot;e:/LOCAL/Betrayer/Metalik Klinik1-Anak Sekolah.mp3&quot;,&quot;r&quot;)

Playing mp3 song on python

I am trying to clip an MP3 between two starting points, like starting at 10 seconds and ending at 16 seconds (time interval of 6 seconds).

I am using this command:

`ffmpeg -ss 10 -i input.mp3 -t 6 output.mp3`

The resulting `output.mp3` contains the 6 seconds that I specified followed by 8 or 9 seconds of empty audio. Is there something wrong with my command?

Edit:

`ffmpeg -ss 10 -t 6 -i input.mp3 output.mp3` says `-t is not an input option, keeping it for the next output; consider fixing your command line.` and gives me a file that&#39;s got 8 seconds of audio starting from 10s and then some 9 or 10 seconds of silence.

`ffmpeg -ss 10 -to 16 -i input.mp3 output.mp3` produces a file that is twice the length of the original - basically the same audio file repeated again.\

Testing the output:

I used Quicktime and it has silent audio at the end. The description of the output file in finder says like 14 seconds. When I use VLC, it plays for the correct 6 seconds and stops, even though its duration in the file browser in VLC says 14. My MPlayer doesn&#39;t work properly. I also did the preview audio in Finder, and it plays the 6 seconds properly and then stops. But the round seeker bar of the MP3 didn&#39;t reach the end. And it also says 14 seconds instead of 6.

My goal is to stream this 6 second file through a REST API to the front end. I want the user to be able to download this file properly. Ideally it won&#39;t have inconsistent metadata (14 seconds instead of 6).

ffmpeg clip audio interval with starting and end time

I have my own implementation of `TrackRenderer` for an mp3 decoder, that I integrated. When a lollipop device goes to standby and comes back, it&#39;s not always repeatable but the audio starts to stutter until I force stop the application.

In the beginning, I thought it was the decoder I implemented, so I tried comparing the file output between a stuttering track to a normal one. The files are identical, I then thought maybe it&#39;s taking too long to decode, so I increased the buffer size and called `setPlayReady` false, in order for the data to buffer. It stutters the same as if I didn&#39;t pause. I am currently thinking the issue is with either my implementation of an audio track or an OS bug. The bug only happens on Lollipop devices.

My TrackRenderer uses the same workflow as [AudioTrackRenderer](https://github.com/google/ExoPlayer/blob/b3bf8fea20c1e82abef9a9a2699b3d7147672dd3/extensions/opus/src/main/java/com/google/android/exoplayer/ext/opus/LibopusAudioTrackRenderer.java), with my own native implementation for the decoder for mp3 and not opus.


ExoPlayer AudioTrack Stuttering

Does anyone know if there exists a MIME type for Markdown? I guess it is `text/plain`, but is there a more specific one?

What is the MIME type for Markdown?

This is the usual SVG mime type:

    image/svg+xml
And it works great. However, when embedding an SVG font, chrome tells you the mime type is incorrect, obviously because you return a font instead of an image.

Is there any universal mime type? is chrome wrong? is `application/svg+xml` accepted somehow?

I guess this is still a gray area in HTML5 but someone here might know.

Right mime type for SVG images with fonts embedded

I can&#39;t figure out how to force the MIME type `application/json` for a view in Flask. Here is a simple view I&#39;ve thrown together for demonstration purposes:

    @app.route(&quot;/&quot;)
    def testView():
        ret = &#39;{&quot;data&quot;: &quot;JSON string example&quot;}&#39;
        return ret

The JSON string (held in variable `ret`) is gathered from elsewhere (using stdout from another program using [`subprocess`](http://docs.python.org/library/subprocess.html)) so I can&#39;t use [`jsonify`](http://flask.pocoo.org/docs/api/#flask.jsonify) provided with Flask.

I&#39;ve had a look at the [&quot;Returning Json&quot; Documentation][1] and [this](https://stackoverflow.com/questions/7086448/) Stackoverflow question but I haven&#39;t had any luck so far. I&#39;ve been looking around for awhile now &amp; will continue searching but thought I&#39;d ask here just in case anyone has come across this.

Thanks.


----------

See the [answer below](https://stackoverflow.com/a/11945643/586621)

The solution:

    @app.route(&quot;/&quot;)
    def testView():
        ret = &#39;{&quot;data&quot;: &quot;JSON string example&quot;}&#39;

        resp = Response(response=ret,
                        status=200,
                        mimetype=&quot;application/json&quot;)

        return resp


I found this website useful: [Implementing a RESTful Web API with Python &amp; Flask][2]


  [1]: http://flask.pocoo.org/docs/api/#returning-json
  [2]: http://blog.luisrei.com/articles/flaskrest.html

Forcing application/json MIME type in a view (Flask)

For certain resources, my RESTful server only accepts `PUT` and `POST` requests with JSON objects as the content body, thus requiring a `Content-Type` of `application/json` instead of `application/x-www-form-urlencoded` or `multipart/form-data` or anything else.

Malformed JSON (or lack thereof) returns a `400` with the error message taken directly from the exception raised by the JSON parser, for debugging purposes.

Which HTTP error code means that the client sent a request with an unacceptable `Content-Type`, even if the server could technically parse the request content?

HTTP status code for unaccepted Content-Type in request

I&#39;m getting a &quot;Resource interpreted as Script but transferred with MIME type text/plain&quot; warning in Google Chrome when including a local script file.

I know the problem appears when loading a file from a server or through ajax which most often depends on wrong headers being set.

The weird thing is that I get this warning even though it is run from a local folder: `file:///C:/test/foo.html`

This happens only in Chrome with the most basic html there is:

    &lt;!DOCTYPE html&gt;
        &lt;html&gt;
    	&lt;head&gt;
    		&lt;script type=&quot;text/javascript&quot; src=&quot;bar.js&quot;&gt;&lt;/script&gt;
    	&lt;/head&gt;
    	&lt;body&gt;
    	&lt;/body&gt;
    &lt;/html&gt;

bar.js is also as simple as it can get:
  
    function hello() {}

I&#39;ve tried adding a meta tag: 

    &lt;meta http-equiv=&quot;content-script-type&quot; content=&quot;text/javascript&quot;&gt;

and tested with other doctypes but nothing seems to help.

This obviously isn&#39;t a real issue since the scripts still work fine, but I&#39;m working on a large project and currently have around 150 scripts included. It therefore makes it difficult to see when an actual warning occurs in between them.

Everything works fine when I run the file on a server, locally or remote.

Any ideas on why chrome is annoying me with this?

Content Type	Original Author	Original Content on Stackoverflow
Question	Kristian	View Question on Stackoverflow
Solution 1 - Php	saluce	View Answer on Stackoverflow
Solution 2 - Php	Eugene Petakhin	View Answer on Stackoverflow
Solution 3 - Php	zessx	View Answer on Stackoverflow
Solution 4 - Php	Johnny Zhao	View Answer on Stackoverflow
Solution 5 - Php	Madan Sapkota	View Answer on Stackoverflow
Solution 6 - Php	garchompstomp	View Answer on Stackoverflow

Which mime type should I use for mp3

Php Problem Overview

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MongoDB: How to query for records where field is null or not set?

Can I mark a field invalid from javascript?

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