* [misc] Use "static" keyword instead of "self".

lib/base/delegate/delegate.class.php

@@ -20,7 +20,7 @@ require_once dirname(__FILE__, 3) . '/vendor/autoload.php';
  *     protected static $className = 'ThirdPartyClass';
  *     public function __construct()
  *     {
- *         $this->instance = new self::$className();
+ *         $this->instance = new static::$className();
  *     }
  * }
  *

lib/captcha/captcha.class.php

@@ -19,6 +19,6 @@ class captcha extends baseDelegate
 
     public function __construct($phrase = null, ?PhraseBuilderInterface $builder = null)
     {
-        $this->instance = new self::$className($phrase, $builder);
+        $this->instance = new static::$className($phrase, $builder);
     }
 }

lib/crontab/crontab.class.php

@@ -19,6 +19,6 @@ class crontab extends baseDelegate
 
     public function __construct($expression, ?FieldFactory $fieldFactory = null)
     {
-        $this->instance = new self::$className($expression, $fieldFactory);
+        $this->instance = new static::$className($expression, $fieldFactory);
     }
 }

lib/diff/diff.class.php

@@ -19,6 +19,6 @@ class diff extends baseDelegate
 
     public function __construct($from_text = '', $to_text = '', $granularityStack = null)
     {
-        $this->instance = new self::$className($from_text, $to_text, $granularityStack);
+        $this->instance = new static::$className($from_text, $to_text, $granularityStack);
     }
 }

lib/mobile/mobile.class.php

@@ -19,6 +19,6 @@ class mobile extends baseDelegate
 
     public function __construct(?array $headers = null, $userAgent = null)
     {
-        $this->instance = new self::$className($headers, $userAgent);
+        $this->instance = new static::$className($headers, $userAgent);
     }
 }

lib/parsedown/parsedown.class.php

@@ -19,6 +19,6 @@ class parsedown extends baseDelegate
 
     public function __construct()
     {
-        $this->instance = new self::$className();
+        $this->instance = new static::$className();
     }
 }

lib/pclzip/pclzip.class.php

@@ -19,6 +19,6 @@ class pclzip extends baseDelegate
 
     public function __construct($p_zipname)
     {
-        $this->instance = new self::$className($p_zipname);
+        $this->instance = new static::$className($p_zipname);
     }
 }

lib/phpexcel/phpexcel.class.php

@@ -23,7 +23,7 @@ class phpExcel extends baseDelegate
 
     public function __construct()
     {
-        $this->instance = new self::$className();
+        $this->instance = new static::$className();
     }
 
     public static function load($file)

lib/phpmailer/phpmailer.class.php

@@ -19,6 +19,6 @@ class phpmailer extends baseDelegate
 
     public function __construct($exceptions = null)
     {
-        $this->instance = new self::$className($exceptions);
+        $this->instance = new static::$className($exceptions);
     }
 }

lib/phpthumb/phpthumb.class.php

@@ -19,6 +19,6 @@ class phpthumb extends baseDelegate
 
     public function __construct($fileName, $options = array(), array $plugins = array())
     {
-        $this->instance = new self::$className($fileName, $options, $plugins);
+        $this->instance = new static::$className($fileName, $options, $plugins);
     }
 }

lib/phpword/phpword.class.php

@@ -22,6 +22,6 @@ class phpword extends baseDelegate
 
     public function __construct()
     {
-        $this->instance = new self::$className();
+        $this->instance = new static::$className();
     }
 }

lib/pinyin/pinyin.class.php

@@ -19,6 +19,6 @@ class pinyin extends baseDelegate
 
     public function __construct($loaderName = null)
     {
-        $this->instance = new self::$className($loaderName);
+        $this->instance = new static::$className($loaderName);
     }
 }

lib/purifier/purifier.class.php

@@ -26,6 +26,6 @@ class purifier extends baseDelegate
         foreach ($config as $key => $value) {
             $purifierConfig->set($key, $value);
         }
-        $this->instance = new self::$className($purifierConfig);
+        $this->instance = new static::$className($purifierConfig);
     }
 }

lib/spout/spout.class.php

@@ -19,6 +19,6 @@ class spout extends baseDelegate
 
     public function __construct($readerType = 'xlsx')
     {
-        $this->instance = self::$className::createFromType($readerType);
+        $this->instance = static::$className::createFromType($readerType);
     }
 }

lib/spyc/spyc.class.php

@@ -19,6 +19,6 @@ class spyc extends baseDelegate
 
     public function __construct()
     {
-        $this->instance = new self::$className();
+        $this->instance = new static::$className();
     }
 }