diff --git a/phpBB/includes/acp/acp_attachments.php b/phpBB/includes/acp/acp_attachments.php
index 3871f921b6..fa83da20b1 100644
--- a/phpBB/includes/acp/acp_attachments.php
+++ b/phpBB/includes/acp/acp_attachments.php
@@ -1123,9 +1123,18 @@ class acp_attachments
 		if (empty($_ENV['MAGICK_HOME']))
 		{
 			$locations = array('C:/WINDOWS/', 'C:/WINNT/', 'C:/WINDOWS/SYSTEM/', 'C:/WINNT/SYSTEM/', 'C:/WINDOWS/SYSTEM32/', 'C:/WINNT/SYSTEM32/', '/usr/bin/', '/usr/sbin/', '/usr/local/bin/', '/usr/local/sbin/', '/opt/', '/usr/imagemagick/', '/usr/bin/imagemagick/');
+			$path_locations = str_replace('\\', '/', (explode(($exe) ? ';' : ':', $_ENV['PATH'])));	
+			
+			$locations = array_merge($path_locations, $locations);
 
 			foreach ($locations as $location)
 			{
+				// The path might not end properly, fudge it
+				if (substr($location, -1, 1) !== '/')
+				{
+					$location .= '/';
+				}
+
 				if (@is_readable($location . 'mogrify' . $exe) && @filesize($location . 'mogrify' . $exe) > 3000)
 				{
 					$imagick = str_replace('\\', '/', $location);
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 1949b5f6c4..d474505eff 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -161,7 +161,8 @@ if (!function_exists('array_combine'))
 		$values = array_values($values);
 
 		$n = sizeof($keys);
-		if (!$n || !sizeof($values) || ($n != sizeof($values)))
+		$m = sizeof($values);
+		if (!$n || !$m || ($n != $m))
 		{
 			return false;
 		}
diff --git a/phpBB/install/install.php b/phpBB/install/install.php
index de019791e6..c2f4478c07 100644
--- a/phpBB/install/install.php
+++ b/phpBB/install/install.php
@@ -421,9 +421,17 @@ if ($stage == 0)
 	if (empty($_ENV['MAGICK_HOME']))
 	{
 		$locations = array('C:/WINDOWS/', 'C:/WINNT/', 'C:/WINDOWS/SYSTEM/', 'C:/WINNT/SYSTEM/', 'C:/WINDOWS/SYSTEM32/', 'C:/WINNT/SYSTEM32/', '/usr/bin/', '/usr/sbin/', '/usr/local/bin/', '/usr/local/sbin/', '/opt/', '/usr/imagemagick/', '/usr/bin/imagemagick/');
+		$path_locations = str_replace('\\', '/', (explode(($exe) ? ';' : ':', $_ENV['PATH'])));
 
+		$locations = array_merge($path_locations, $locations);
 		foreach ($locations as $location)
 		{
+			// The path might not end properly, fudge it
+			if (substr($location, -1, 1) !== '/')
+			{
+				$location .= '/';
+			}
+
 			if (@is_readable($location . 'mogrify' . $exe) && @filesize($location . 'mogrify' . $exe) > 3000)
 			{
 				$img_imagick = str_replace('\\', '/', $location);
@@ -1350,7 +1358,7 @@ function inst_language_select($default = '')
 
 	$dir = @opendir($phpbb_root_path . 'language');
 
-	while ($file = readdir($dir))
+	while (($file = readdir($dir)) !== false)
 	{
 		$path = $phpbb_root_path . 'language/' . $file;