Raise PHPStan to level 7.

composer.json

@@ -31,7 +31,7 @@
 		"test": "php phpunit.phar",
 		"test-coverage": "php phpunit.phar --log-junit tmp/coverage/unitreport.xml --coverage-html tmp/coverage --coverage-clover tmp/coverage/coverage.xml",
 		"test-setup": "[ ! -f phpunit.phar ] && wget https://phar.phpunit.de/phpunit.phar || true",
-		"phpstan": "phpstan analyse -c tests/phpstan.neon -l 5 src/",
+		"phpstan": "phpstan analyse -c tests/phpstan.neon -l 7 src/",
 		"phpstan-setup": "cp composer.json composer.backup && composer require --dev phpstan/phpstan:\"^0.11\" && mv composer.backup composer.json",
 		"cs-check": "phpcs -v -p --standard=vendor/fig-r/psr2r-sniffer/PSR2R/ruleset.xml --extensions=php src/ tests/",
 		"cs-fix": "phpcbf -v --standard=vendor/fig-r/psr2r-sniffer/PSR2R/ruleset.xml --extensions=php src/ tests/"

src/MediaEmbed.php

@@ -149,6 +149,9 @@ protected function _parseLink($url, $regex) {
 		}
 
 		$source = preg_replace('/[^(\x20-\x7F)]*/', '', $content);
+		if (!$source) {
+			return false;
+		}
 
 		if (preg_match('~' . $regex . '~imu', $source, $match)) {
 			$this->_match = $match;

src/Object/MediaObject.php

@@ -191,6 +191,10 @@ public function icon() {
 		}
 
 		$pieces = parse_url($url);
+		if (!$pieces) {
+			return null;
+		}
+
 		$url = $pieces['host'];
 
 		$icon = 'http://www.google.com/s2/favicons?domain=';
@@ -298,7 +302,7 @@ public function setAttribute($param, $value = null) {
 	/**
 	 * Set the height of the object
 	 *
-	 * @param mixed $height Height to set the object to
+	 * @param int $height Height to set the object to
 	 * @param bool $adjustWidth
 	 * @return $this
 	 */
@@ -312,7 +316,7 @@ public function setHeight($height, $adjustWidth = false) {
 	/**
 	 * Set the width of the object
 	 *
-	 * @param mixed $width Width to set the object to
+	 * @param int $width Width to set the object to
 	 * @param bool $adjustHeight
 	 * @return $this
 	 */