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wp-content/plugins/gravityforms/includes/query/json-handlers/class-gf-string-json-handler.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Gravity_Forms\Gravity_Forms\Query\JSON_Handlers;
+
+/**
+ * GF_JSON_Handler implementation which uses a MySQL "LIKE" query. Not as performant as JSON_CONTAINS, but
+ * available on older (pre-5.7) versions of MySQL.
+ *
+ * @since 2.7
+ */
+class GF_String_JSON_Handler extends GF_JSON_Handler {
+
+	public function query( $slug ) {
+		global $wpdb;
+
+		$setting_name   = $this->get_setting_name();
+		$like_statement = sprintf( '%%"%s":"%s"%%', $setting_name, $slug );
+		$query          = "SELECT form_id FROM {$wpdb->prefix}gf_form_meta AS meta LEFT JOIN {$wpdb->prefix}gf_form AS form ON form.id = meta.form_id WHERE is_trash = 0 AND is_active = 1 AND display_meta LIKE %s";
+		$prepared_query = $wpdb->prepare( $query, $like_statement ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
+
+		return $wpdb->get_var( $prepared_query ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.PreparedSQL.NotPrepared
+	}
+
+}