Add global state for page errors, warnings, etc.

Added arrays to the global $_SCROTT variable to keep lists of page
errors, warnings, and notices.  Also added functions to globals.php for
interacting with these arrays.

1 files changed, 40 insertions, 0 deletions

diff --git a/app/class/globals.php b/app/class/globals.php
index 8bfa029..5a03da9 100644
--- a/app/class/globals.php
+++ b/app/class/globals.php
@@ -20,6 +20,19 @@
 define("__VERSION__", "v0.0");
 
 /*
+ * These global variables are arrays of strings logged by Scrott business
+ * logic to report errors, warnings, or informational responses to the
+ * user in cases where an exception doesn't need to be thrown.
+ */
+define("ERROR", "errorlist");
+define("WARNING", "warninglist");
+define("NOTICE", "noticelist");
+
+$_SCROTT[ERROR] = array();
+$_SCROTT[WARNING] = array();
+$_SCROTT[NOTICE] = array();
+
+/*
  * Get the application root path.  This is an absolute path on the server.
  */
 function ar() : string
@@ -63,4 +76,31 @@ function require_https() : void
         redirect("https://" . $_SERVER['SERVER_NAME'] . ap());
 }
 
+/*
+ * Check for errors, warnings, or notices
+ */
+function isError(string $level) : bool
+{
+    global $_SCROTT;
+    return count($_SCROTT[$level]) > 0;
+}
+
+/*
+ * Log an error, warning, or notice
+ */
+function logError(string $level, string $error) : void
+{
+    global $_SCROTT;
+    $_SCROTT[$level][] = $error;
+}
+
+/*
+ * Get an array of all errors, warnings, or notices
+ */
+function getErrors(string $level) : array
+{
+    global $_SCROTT;
+    return $_SCROTT[$level];
+}
+
 ?>