From 6c5ace3e9963c74cc144f78ad18250a7c89716d0 Mon Sep 17 00:00:00 2001
From: Nico Mollet <nico.mollet@gmail.com>
Date: Tue, 26 Oct 2021 14:17:14 +0200
Subject: [PATCH] Fix array check

---
 inc/plugins/gravityforms.php | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/inc/plugins/gravityforms.php b/inc/plugins/gravityforms.php
index 0fe70a2..238e24c 100644
--- a/inc/plugins/gravityforms.php
+++ b/inc/plugins/gravityforms.php
@@ -86,18 +86,22 @@ function stormbringer_gform_previous_button($button, $form)
 //This filter is executed when the form is displayed and can be used to completely change
 //the form tag (i.e. <form method="post">).
 
-function stormbringer_gform_form_tag($form_tag, $form)
-{
-	$class = "form ";
-	if ($form["labelPlacement"] == "right_label") $class .= "form-horizontal";
-	if ($form["labelPlacement"] == "top_label") $class .= "form-vertical";
-	if ($form["labelPlacement"] == "left_label") $class .= "form-horizontal form-horizontal-leftlabel";
-	$class .= ' ' . $form['cssClass'];
-	//$form_tag = preg_replace("|action='(.*?)'|", "action='custom_handler.php'", $form_tag);
-	//$form_tag = str_replace("<form",'<form class="'.$class.' '.$form['cssClass'].'"',$form_tag);
-	//$form_tag = preg_replace("|class='(.*?)'|", "class='" . $class . "'", $form_tag);
-	$form_tag = preg_replace("|class='(.*?)'|", "", $form_tag);
-	$form_tag = str_replace("<form",'<form class="'.$class.'"',$form_tag);
+function stormbringer_gform_form_tag( $form_tag, $form ) {
+	$form_css = $form['cssClass'] ?? '';
+	$class    = "form ";
+	if ( $form["labelPlacement"] == "right_label" ) {
+		$class .= "form-horizontal";
+	}
+	if ( $form["labelPlacement"] == "top_label" ) {
+		$class .= "form-vertical";
+	}
+	if ( $form["labelPlacement"] == "left_label" ) {
+		$class .= "form-horizontal form-horizontal-leftlabel";
+	}
+	$class    .= ' ' . $form_css;
+	$form_tag = preg_replace( "|class='(.*?)'|", "", $form_tag );
+	$form_tag = str_replace( "<form", '<form class="' . $class . '"', $form_tag );
+
 	return $form_tag;
 }
 add_filter("gform_form_tag", "stormbringer_gform_form_tag", 10, 2);