strict declare return type. update some info

Author: inhere

composer.json

@@ -25,7 +25,6 @@
     }
   },
   "suggest": {
-    "inhere/simple-print-tool": "Very lightweight data printing tools",
     "inhere/php-validate": "Very lightweight data validate tool",
     "inhere/console": "a lightweight php console application library."
   }

src/ProcessUtil.php

@@ -325,7 +325,7 @@ public static function isRunning(int $pid): bool
      * exit
      * @param int $code
      */
-    public static function quit($code = 0)
+    public static function quit($code = 0): void
     {
         exit((int)$code);
     }
@@ -581,7 +581,7 @@ public static function setTitle(string $title): bool
      * @param string $group
      * @throws \RuntimeException
      */
-    public static function changeScriptOwner(string $user, string $group = '')
+    public static function changeScriptOwner(string $user, string $group = ''): void
     {
         $uInfo = \posix_getpwnam($user);
 

src/Sys.php

@@ -143,7 +143,7 @@ public static function execute(string $command, bool $returnStatus = true, strin
      * run a command in background
      * @param string $cmd
      */
-    public static function bgExec(string $cmd)
+    public static function bgExec(string $cmd): void
     {
         self::execInBackground($cmd);
     }
@@ -152,7 +152,7 @@ public static function bgExec(string $cmd)
      * run a command in background
      * @param string $cmd
      */
-    public static function execInBackground(string $cmd)
+    public static function execInBackground(string $cmd): void
     {
         if (self::isWindows()) {
             \pclose(\popen('start /B ' . $cmd, 'r'));
@@ -231,7 +231,7 @@ public static function bashIsAvailable(): bool
      */
     public static function getOutsideIP(): string
     {
-        list($code, $output) = self::run('ip addr | grep eth0');
+        [$code, $output] = self::run('ip addr | grep eth0');
 
         if ($code === 0 && $output && \preg_match('#inet (.*)\/#', $output, $ms)) {
             return $ms[1];