@@ -83,7 +83,7 @@ public static function php_os_family()
8383 'SunOS '  => 'Solaris ' ,
8484 ];
8585
86-  return  isset ( $ map [\PHP_OS ]) ?  $ map [\ PHP_OS ] :  'Unknown ' ;
86+  return  $ map [\PHP_OS ] ??  'Unknown ' ;
8787 }
8888
8989 public  static  function  spl_object_id ($ object )
@@ -96,7 +96,7 @@ public static function spl_object_id($object)
9696 }
9797
9898 // On 32-bit systems, PHP_INT_SIZE is 4, 
99-  return  self ::$ hashMask  ^ hexdec (substr ($ hash , 16  - (\PHP_INT_SIZE  * 2  - 1 ), ( \PHP_INT_SIZE  * 2  - 1 ) ));
99+  return  self ::$ hashMask  ^ hexdec (substr ($ hash , 16  - (\PHP_INT_SIZE  * 2  - 1 ), \PHP_INT_SIZE  * 2  - 1 ));
100100 }
101101
102102 public  static  function  sapi_windows_vt100_support ($ stream , $ enable  = null )
@@ -167,7 +167,7 @@ private static function initHashMask()
167167 self ::$ hashMask  = (int ) substr (ob_get_clean (), 17 );
168168 }
169169
170-  self ::$ hashMask  ^= hexdec (substr (spl_object_hash ($ obj ), 16  - (\PHP_INT_SIZE  * 2  - 1 ), ( \PHP_INT_SIZE  * 2  - 1 ) ));
170+  self ::$ hashMask  ^= hexdec (substr (spl_object_hash ($ obj ), 16  - (\PHP_INT_SIZE  * 2  - 1 ), \PHP_INT_SIZE  * 2  - 1 ));
171171 }
172172
173173 public  static  function  mb_chr ($ code , $ encoding  = null )
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