Create get-backtrace-of-warning.php

Author: brianhogg

lifterlms/get-backtrace-of-warning.php

@@ -0,0 +1,15 @@
+<?php
+// Log the backtrace of a warning instead of just the first line.
+
+class WarningWithStacktrace extends ErrorException {}
+set_error_handler(function($severity, $message, $file, $line) {
+	if ((error_reporting() & $severity)) {
+		if ($severity & (E_WARNING | E_NOTICE | E_USER_WARNING | E_USER_NOTICE | E_DEPRECATED)) {
+			$ex = new WarningWithStacktrace($message, 0, $severity, $file, $line);
+			error_log($ex);
+			return true;
+		} else {
+			throw new ErrorException($message, 0, $severity, $file, $line);
+		}
+	}
+});