How to get the MP3 metadata (StreamTitle) from a streaming URL

getMp3StreamTitle.php

<?php

	/**
	 * Please be aware. This gist requires at least PHP 5.4 to run correctly.
	 * Otherwise consider downgrading the $opts array code to the classic "array" syntax.
	 */
	function getMp3StreamTitle($streamingUrl, $interval, $offset = 0, $headers = true)
	{
		$needle = 'StreamTitle=';
		$ua = 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36';

		$opts = [
			'http' => [
				'method' => 'GET',
				'header' => 'Icy-MetaData: 1',
				'user_agent' => $ua
			]
		];

		if (($headers = get_headers($streamingUrl)))
			foreach ($headers as $h)
				if (strpos(strtolower($h), 'icy-metaint') !== false && ($interval = explode(':', $h)[1]))
					break;

		$context = stream_context_create($opts);

		if ($stream = fopen($streamingUrl, 'r', false, $context))
		{
			$buffer = stream_get_contents($stream, $interval, $offset);
			fclose($stream);

			if (strpos($buffer, $needle) !== false)
			{
				$title = explode($needle, $buffer)[1];
				return substr($title, 1, strpos($title, ';') - 2);
			}
			else
				return getMp3StreamTitle($streamingUrl, $interval, $offset + $interval, false);
		}
		else
			throw new Exception("Unable to open stream [{$streamingUrl}]");
	}

	var_dump(getMp3StreamTitle('http://str30.creacast.com/r101_thema6', 19200));

	echo "\n\n";

?>