add check for zlib

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/util.php b/lib/util.php
index 1dcf7c2cbfa..b742e27b55d 100755
--- a/lib/util.php
+++ b/lib/util.php
@@ -276,6 +276,9 @@ class OC_Util {
 		if(!function_exists('imagepng')){
 			$errors[]=array('error'=>'PHP module GD is not installed.<br/>','hint'=>'Please ask your server administrator to install the module.');
 		}
+		if(!function_exists('gzencode')){
+			$errors[]=array('error'=>'PHP module zlib is not installed.<br/>','hint'=>'Please ask your server administrator to install the module.');
+		}
 		if(floatval(phpversion())<5.3){
 			$errors[]=array('error'=>'PHP 5.3 is required.<br/>','hint'=>'Please ask your server administrator to update PHP to version 5.3 or higher. PHP 5.2 is no longer supported by ownCloud and the PHP community.');
 		}