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system/DataCaster/Cast/JsonCast.php

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+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\DataCaster\Cast;
+
+use CodeIgniter\DataCaster\Exceptions\CastException;
+use JsonException;
+use stdClass;
+
+/**
+ * Class JsonCast
+ *
+ * (PHP) [array|stdClass --> string] --> (DB driver) --> (DB column) string
+ *       [               <-- string] <-- (DB driver) <-- (DB column) string
+ */
+class JsonCast extends BaseCast
+{
+    public static function get(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): array|stdClass {
+        if (! is_string($value)) {
+            self::invalidTypeValueError($value);
+        }
+
+        $associative = in_array('array', $params, true);
+
+        $output = ($associative ? [] : new stdClass());
+
+        try {
+            $output = json_decode($value, $associative, 512, JSON_THROW_ON_ERROR);
+        } catch (JsonException $e) {
+            throw CastException::forInvalidJsonFormat($e->getCode());
+        }
+
+        return $output;
+    }
+
+    public static function set(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): string {
+        try {
+            $output = json_encode($value, JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR);
+        } catch (JsonException $e) {
+            throw CastException::forInvalidJsonFormat($e->getCode());
+        }
+
+        return $output;
+    }
+}