frontend and backend

backend/src/Entity/PregDTO.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use App\Resource\Functions;
+
+/**
+ * Basic data comming from form.
+ */
+class PregDTO
+{
+    public function __construct(
+        public readonly Functions $method,
+        public readonly string $pattern,
+        public readonly string $replacement,
+        public readonly string $subject,
+        public readonly bool $PREG_OFFSET_CAPTURE,
+        public readonly bool $PREG_SET_ORDER,
+        public readonly bool $PREG_SPLIT_DELIM_CAPTURE,
+        public readonly bool $PREG_SPLIT_NO_EMPTY,
+        public readonly bool $PREG_SPLIT_OFFSET_CAPTURE,
+        public readonly bool $PREG_UNMATCHED_AS_NULL,
+        public readonly ?int $offset,
+        public readonly ?int $limit,
+        public readonly ?string $delimiter
+    ) {}
+}

backend/src/Entity/PregResponse.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use Exception;
+
+/**
+ * Data returned to web interface. Will be converted to JSON most likely.
+ */
+class PregResponse
+{
+    public function __construct(
+        public readonly mixed $dump,
+        public readonly string $code,
+        public readonly ?string $returnType,
+        public readonly ?string $returnValue,
+    ) {
+        if (preg_last_error() !== PREG_NO_ERROR) {
+            throw new Exception('preg_last_error() = '. preg_last_error_msg());
+        }
+    }
+}