Basic Class update

Start moving all basic class methods into dedicated classes.
Most of them are static and can be direct called.
No need to group them into one big class that is hard to maintain and
check.

Work is ongoing

www/lib/CoreLibs/Check/Jason.php

@@ -0,0 +1,86 @@
+<?php declare(strict_types=1);
+
+/*
+ * Converts a json string to array and stores error for later checking
+ * can also return empty array on demand
+ * and self set json as is on error as array
+ */
+
+namespace CoreLibs\Check;
+
+class Jason
+{
+	private static $json_last_error;
+
+	/**
+	 * converts a json string to an array
+	 * or inits an empty array on null string
+	 * or failed convert to array
+	 * In ANY case it will ALWAYS return array.
+	 * Does not throw errors
+	 * @param  string|null $json     a json string, or null data
+	 * @param  bool        $override if set to true, then on json error
+	 *                               set original value as array
+	 * @return array                 returns an array from the json values
+	 */
+	public static function jsonConvertToArray(?string $json, bool $override = false): array
+	{
+		if ($json !== null) {
+			$_json = json_decode($json, true);
+			if (self::$json_last_error = json_last_error()) {
+				if ($override == true) {
+					// init return as array with original as element
+					$json = [$json];
+				} else {
+					$json = [];
+				}
+			} else {
+				$json = $_json;
+			}
+		} else {
+			$json = [];
+		}
+		// be sure that we return an array
+		return (array)$json;
+	}
+
+	/**
+	 * [jsonGetLastError description]
+	 * @param  bool|boolean $return_string [default=false] if set to true
+	 *                                     it will return the message string and not
+	 *                                     the error number
+	 * @return int|string                  Either error number (0 for no error)
+	 *                                     or error string ('' for no error)
+	 */
+	public static function jsonGetLastError(bool $return_string = false)
+	{
+		$json_error_string = '';
+		// valid errors as of php 8.0
+		switch (self::$json_last_error) {
+			case JSON_ERROR_NONE:
+				$json_error_string = '';
+				break;
+			case JSON_ERROR_DEPTH:
+				$json_error_string = 'Maximum stack depth exceeded';
+				break;
+			case JSON_ERROR_STATE_MISMATCH:
+				$json_error_string = 'Underflow or the modes mismatch';
+				break;
+			case JSON_ERROR_CTRL_CHAR:
+				$json_error_string = 'Unexpected control character found';
+				break;
+			case JSON_ERROR_SYNTAX:
+				$json_error_string = 'Syntax error, malformed JSON';
+				break;
+			case JSON_ERROR_UTF8:
+				$json_error_string = 'Malformed UTF-8 characters, possibly incorrectly encoded';
+				break;
+			default:
+				$json_error_string = 'Unknown error';
+				break;
+		}
+		return $return_string === true ? $json_error_string : self::$json_last_error;
+	}
+}
+
+// __END__