utilization of operator ??

Author: dg

examples/localization.php

@@ -33,7 +33,7 @@ function __construct(array $table)
 	 */
 	public function translate($message, int $count = NULL): string
 	{
-		return isset($this->table[$message]) ? $this->table[$message] : $message;
+		return $this->table[$message] ?? $message;
 	}
 }
 

src/Forms/ControlGroup.php

@@ -99,7 +99,7 @@ public function setOption($key, $value)
 	 */
 	public function getOption($key, $default = NULL)
 	{
-		return isset($this->options[$key]) ? $this->options[$key] : $default;
+		return $this->options[$key] ?? $default;
 	}
 
 

src/Forms/Controls/BaseControl.php

@@ -581,7 +581,7 @@ public function setOption($key, $value)
 	 */
 	public function getOption($key, $default = NULL)
 	{
-		return isset($this->options[$key]) ? $this->options[$key] : $default;
+		return $this->options[$key] ?? $default;
 	}
 
 

src/Forms/Form.php

@@ -305,7 +305,7 @@ public function getGroups()
 	 */
 	public function getGroup($name)
 	{
-		return isset($this->groups[$name]) ? $this->groups[$name] : NULL;
+		return $this->groups[$name] ?? NULL;
 	}
 
 

src/Forms/Helpers.php

@@ -155,10 +155,10 @@ public static function createInputList(array $items, array $inputAttrs = NULL, a
 
 		foreach ($items as $value => $caption) {
 			foreach ($inputAttrs as $k => $v) {
-				$input->attrs[$k] = isset($v[$value]) ? $v[$value] : NULL;
+				$input->attrs[$k] = $v[$value] ?? NULL;
 			}
 			foreach ($labelAttrs as $k => $v) {
-				$label->attrs[$k] = isset($v[$value]) ? $v[$value] : NULL;
+				$label->attrs[$k] = $v[$value] ?? NULL;
 			}
 			$input->value = $value;
 			$res .= ($res === '' && $wrapperEnd === '' ? '' : $wrapper)
@@ -193,7 +193,7 @@ public static function createSelectBox(array $items, array $optionAttrs = NULL,
 			foreach ($subitems as $value => $caption) {
 				$option->value = $value;
 				foreach ($optionAttrs as $k => $v) {
-					$option->attrs[$k] = isset($v[$value]) ? $v[$value] : NULL;
+					$option->attrs[$k] = $v[$value] ?? NULL;
 				}
 				if ($caption instanceof Html) {
 					$caption = clone $caption;