Fix: addresses implicit nullability for PHP 8.4 compatibility

src/Contracts/ValidationRule.php

@@ -25,7 +25,7 @@ public static function id(): string;
      *
      * @since 1.0.0
      */
-    public static function fromString(string $options = null): ValidationRule;
+    public static function fromString(?string $options = null): ValidationRule;
 
     /**
      * The invokable method used to validate the value. If the value is invalid, the fail callback should be invoked

src/Rules/Abstracts/ConditionalRule.php

@@ -39,7 +39,7 @@ public function __construct($conditions)
      *
      * @since 1.2.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         if (empty($options)) {
             Config::throwInvalidArgumentException(static::class . ' rule requires at least one condition');

src/Rules/Boolean.php

@@ -26,7 +26,7 @@ public static function id(): string
      *
      * @since 1.4.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/Currency.php

@@ -25,7 +25,7 @@ public static function id(): string
      *
      * @since 1.0.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/DateTime.php

@@ -33,15 +33,15 @@ public static function id(): string
     /**
      * @since 1.2.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new static($options);
     }
 
     /**
      * @since 1.2.0
      */
-    public function __construct(string $format = null)
+    public function __construct(?string $format = null)
     {
         $this->format = $format;
     }

src/Rules/Email.php

@@ -28,7 +28,7 @@ public static function id(): string
      *
      * @since 1.0.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/Exclude.php

@@ -30,7 +30,7 @@ public static function id(): string
      *
      * @since 1.2.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/In.php

@@ -37,7 +37,7 @@ final public function __construct(...$acceptedValues)
     /**
      * @since 1.2.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         if (empty(trim($options))) {
             Config::throwInvalidArgumentException('The In rule requires at least one value to be specified.');

src/Rules/Integer.php

@@ -22,7 +22,7 @@ public static function id(): string
     /**
      * @inheritDoc
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/Max.php

@@ -47,7 +47,7 @@ public static function id(): string
      *
      * @since 1.0.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         if (!is_numeric($options)) {
             Config::throwInvalidArgumentException('Max validation rule requires a numeric value');

src/Rules/Min.php

@@ -47,7 +47,7 @@ public static function id(): string
      *
      * @since 1.0.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         if (!is_numeric($options)) {
             Config::throwInvalidArgumentException('Min validation rule requires a numeric value');

src/Rules/Nullable.php

@@ -28,7 +28,7 @@ public static function id(): string
     /**
      * @since 1.1.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/Numeric.php

@@ -25,7 +25,7 @@ public static function id(): string
      *
      * @since 1.0.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/Optional.php

@@ -27,7 +27,7 @@ public static function id(): string
     /**
      * @since 1.1.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/Required.php

@@ -21,7 +21,7 @@ public static function id(): string
     /**
      * @inheritDoc
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }

src/Rules/Size.php

@@ -47,7 +47,7 @@ public static function id(): string
      *
      * @since 1.0.0
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         if (!is_numeric($options)) {
             Config::throwInvalidArgumentException('Size validation rule requires a numeric value');

tests/unit/ValidatorTest.php

@@ -277,7 +277,7 @@ public static function id(): string
         return 'skip';
     }
 
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }
@@ -301,7 +301,7 @@ public static function id(): string
     /**
      * @inheritDoc
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }
@@ -330,7 +330,7 @@ public static function id(): string
     /**
      * @inheritDoc
      */
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }
@@ -361,7 +361,7 @@ public static function id(): string
         return 'exclude';
     }
 
-    public static function fromString(string $options = null): ValidationRule
+    public static function fromString(?string $options = null): ValidationRule
     {
         return new self();
     }