Fix empty delimiter in isSpider()

diff --git a/inc/functions.php b/inc/functions.php
index 8bb05f320e0b26e2c8b97af2e63faa6bce27159b..6b7a1b6138e3948d5e5de7e2721e38052c768f8f 100644 (file)
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -3846,6 +3846,9 @@ function encodeUrl ($url, $outputMode = '0') {
 
 // Simple check for spider
 function isSpider () {
+       // It should not be empty, if so it is better a spider/bot
+       if (detectUserAgent(true) == '') return true;
+
        // Is it a spider?
        return ((strpos('spider', strtolower(detectUserAgent(true))) !== false) || (strpos('bot', strtolower(detectUserAgent(true))) !== false));
 }