From 561b190a798a63205e952e04b5ea3c8bd24b329f Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Thu, 20 Mar 2008 19:08:40 +0000
Subject: [PATCH] Don't error_log() if error_log file is not writable. see
 #5771

git-svn-id: https://develop.svn.wordpress.org/trunk@7418 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/wp-db.php | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/wp-includes/wp-db.php b/wp-includes/wp-db.php
index 62408bc756..99d6710879 100644
--- a/wp-includes/wp-db.php
+++ b/wp-includes/wp-db.php
@@ -189,8 +189,17 @@ class wpdb {
 		$error_str = "WordPress database error $str for query $this->last_query";
 		if ( $caller = $this->get_caller() )
 			$error_str .= " made by $caller";
-		
-		@error_log($error_str, 0);
+
+		$log_error = true;
+		if ( ! function_exists('error_log') )
+			$log_error = false;
+
+		$log_file = @ini_get('error_log');
+		if ( !empty($log_file) && ('syslog' != $log_file) && !is_readable($log_file) )
+			$log_error = false;
+
+		if ( $log_error )
+			@error_log($error_str, 0);
 
 		// Is error output turned on or not..
 		if ( !$this->show_errors )