Add error handler to convert to exceptions

src/Functions/throwError.php

@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * Useful PHP Basics
+ * Copyright (C) 2023 Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+namespace OCC\Basics\Functions;
+
+use ErrorException;
+
+/**
+ * Handles an internal PHP error and throws it as ErrorException.
+ * @example set_error_handler('\\OCC\\Basics\\Functions\\throwError', E_ALL);
+ *
+ * @author Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
+ * @package opencultureconsulting/basics
+ *
+ * @param int $severity The severity of the error
+ * @param string $message The error message
+ * @param ?string $filename The name of the file the error was raised in
+ * @param ?int $line The number of the line the error was raised in
+ *
+ * @return bool Always returns FALSE when not throwing an exception
+ *
+ * @throws \ErrorException
+ */
+function throwError(int $severity = E_ALL, string $message = '', ?string $filename = null, ?int $line = null): bool
+{
+    if (error_reporting() & $severity) {
+        throw new ErrorException($message, 0, $severity, $filename, $line);
+    }
+    return false;
+}