Fix a code comment in Upload->_file_mime_type()
Availability of dangerous functions is now tested using function_usable().
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index acd76b0..1c14f99 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -1212,7 +1212,7 @@
* Notes:
* - the DIRECTORY_SEPARATOR comparison ensures that we're not on a Windows system
* - many system admins would disable the exec(), shell_exec(), popen() and similar functions
- * due to security concerns, hence the function_exists() checks
+ * due to security concerns, hence the function_usable() checks
*/
if (DIRECTORY_SEPARATOR !== '\\')
{
@@ -1223,7 +1223,7 @@
if (function_usable('exec'))
{
/* This might look confusing, as $mime is being populated with all of the output when set in the second parameter.
- * However, we only neeed the last line, which is the actual return value of exec(), and as such - it overwrites
+ * However, we only need the last line, which is the actual return value of exec(), and as such - it overwrites
* anything that could already be set for $mime previously. This effectively makes the second parameter a dummy
* value, which is only put to allow us to get the return status code.
*/