Add ternary to null coalescing php cs fixer rule

.php-cs-fixer.php

@@ -23,6 +23,8 @@
 	'no_extra_blank_lines'                 => true,
 	'no_trailing_whitespace'               => true,
 	'no_whitespace_in_blank_line'          => true,
+	'ternary_to_null_coalescing'           => true,
+	'no_null_property_initialization'      => true,
 	'blank_line_before_statement'          => array(
 		'statements' => array(
 			'try',

css/_single_theme.css.php

@@ -6,7 +6,7 @@
 $settings = FrmStylesHelper::get_settings_for_output( $style );
 extract( $settings ); // phpcs:ignore WordPress.PHP.DontExtract
 
-$is_loaded_via_ajax = isset( $is_loaded_via_ajax ) ? $is_loaded_via_ajax : false;
+$is_loaded_via_ajax = $is_loaded_via_ajax ?? false;
 FrmStylesPreviewHelper::get_additional_preview_style( $settings, $is_loaded_via_ajax );
 
 $important = empty( $important_style ) ? '' : ' !important';

phpstan.neon

@@ -192,7 +192,6 @@ parameters:
 				- classes/controllers/FrmFormActionsController.php
 				- classes/controllers/FrmFormTemplatesController.php
 				- classes/controllers/FrmFormsController.php
-				- classes/controllers/FrmSettingsController.php
 				- classes/controllers/FrmStylesController.php
 				- classes/helpers/FrmAppHelper.php
 				- classes/helpers/FrmCSVExportHelper.php
@@ -210,15 +209,12 @@ parameters:
 				- classes/models/FrmField.php
 				- classes/models/FrmForm.php
 				- classes/models/FrmFormAction.php
-				- classes/models/FrmMigrate.php
 				- classes/models/FrmSettings.php
 				- classes/models/FrmStyle.php
 				- classes/models/fields/FrmFieldType.php
-				- square/controllers/FrmSquareLiteSettingsController.php
 				- stripe/controllers/FrmStrpLiteActionsController.php
 				- stripe/controllers/FrmTransLiteActionsController.php
 				- stripe/helpers/FrmStrpLiteConnectHelper.php
-				- stripe/helpers/FrmTransLiteActionsHelper.php
 				- stripe/helpers/FrmTransLiteAppHelper.php
 				- stripe/models/FrmStrpLiteAuth.php
 				- stripe/models/FrmTransLiteAction.php

tests/phpunit/base/FrmUnitTest.php

@@ -273,7 +273,7 @@ public function get_all_fields_for_form_key( $form_key ) {
 			$this->contact_form_key     => $this->contact_form_field_count,
 			$this->repeat_sec_form_key  => 3,
 		);
-		$expected_field_num = isset( $field_totals[ $form_key ] ) ? $field_totals[ $form_key ] : 0;
+		$expected_field_num = $field_totals[ $form_key ] ?? 0;
 
 		$form_id = $this->factory->form->get_id_by_key( $form_key );
 		$fields  = FrmField::get_all_for_form( $form_id, '', 'include' );

tests/phpunit/emails/test_FrmEmail.php

@@ -24,17 +24,17 @@ class test_FrmEmail extends FrmUnitTest {
 	/**
 	 * @var stdClass
 	 */
-	protected $contact_form = null;
+	protected $contact_form;
 
 	/**
 	 * @var stdClass
 	 */
-	protected $email_action = null;
+	protected $email_action;
 
 	/**
 	 * @var stdClass
 	 */
-	protected $entry = null;
+	protected $entry;
 
 	public static function wpSetUpBeforeClass() {
 		$_POST = array();

tests/phpunit/entries/test_FrmShowEntryShortcode.php

@@ -790,7 +790,7 @@ protected function table_header( $atts ) {
 			$defaults     = $this->get_defaults();
 			$atts         = array_merge( $defaults, $atts );
 			$font_size    = $atts['font_size'];
-			$border_width = isset( $atts['border_width'] ) ? $atts['border_width'] : $atts['field_border_width'];
+			$border_width = $atts['border_width'] ?? $atts['field_border_width'];
 			$border_color = $atts['border_color'];
 
 			$header .= ' style="border-spacing:0;font-size:' . $font_size . ';line-height:135%;';
@@ -980,7 +980,7 @@ protected function get_field_value( $entry, $field, $atts ) {
 		if ( $field->field_key === 'free-html-field' ) {
 			$field_value = 'Lorem ipsum.';
 		} else {
-			$field_value = isset( $entry->metas[ $field->id ] ) ? $entry->metas[ $field->id ] : '';
+			$field_value = $entry->metas[ $field->id ] ?? '';
 
 			if ( is_array( $field_value ) ) {
 				$field_value = implode( ', ', $field_value );

tests/phpunit/stripe/FrmStrpLiteUnitTest.php

@@ -162,7 +162,7 @@ protected function get_plan_options() {
 		return array_filter(
 			array_merge(
 				$default_options,
-				isset( $this->plan_options ) ? $this->plan_options : array()
+				$this->plan_options ?? array()
 			)
 		);
 	}
@@ -275,7 +275,7 @@ private function get_subscription_charge_options( $customer_id, $plan_id ) {
 		return array_filter(
 			array_merge(
 				$default_options,
-				isset( $this->subscription_charge_options ) ? $this->subscription_charge_options : array()
+				$this->subscription_charge_options ?? array()
 			)
 		);
 	}