fix wrong language-string in settings/180.dkim.php, implemented Settings::Add() for updates later (much better than a manual query etc.), added new php-errorhandler so we can display php errors/warnings/notices (whatever is activated) in a nicer way

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>

lib/functions/froxlor/function.phpErrHandler.php

@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * froxlor php error handler
+ *
+ * @param int $errno
+ * @param string $errstr
+ * @param string $errfile
+ * @param int $errline
+ * @param array $errcontext
+ *
+ * @return void|boolean
+ */
+function phpErrHandler($errno, $errstr, $errfile, $errline, array $errcontext) {
+
+	if (!(error_reporting() & $errno)) {
+		// This error code is not included in error_reporting
+		return;
+	}
+
+	if (!isset($_SERVER['SHELL']) || (isset($_SERVER['SHELL']) && $_SERVER['SHELL'] == '')) {
+		global $theme;
+		// if we're not on the shell, output a nicer error-message
+		$err_hint = file_get_contents(FROXLOR_INSTALL_DIR.'/templates/'.$theme.'/misc/phperrornice.tpl');
+		// replace values
+		$err_hint = str_replace("<TEXT>", '#'.$errno.' '.$errstr, $err_hint);
+		$err_hint = str_replace("<DEBUG>", $errfile.':'.$errline, $err_hint);
+
+		// show
+		echo $err_hint;
+		// return true to ignore php standard error-handler
+		return true;
+	}
+
+	// of on shell, use the php standard error-handler
+	return false;
+}