Updated exit codes as constant values
Re-allocated exit status codes according to three references, which follow:
BSD sysexits.h:http://www.gsp.com/cgi-bin/man.cgi?section=3&topic=sysexits
GNU recomendations:http://www.gnu.org/software/libc/manual/html_node/Exit-Status.html
Bash scripting:http://tldp.org/LDP/abs/html/exitcodes.html
The GNU recommendations stem from and expand upon the standard C/C++ library (stdlibc)
definitions, while also suggesting some best-practice conventions which happen to prevent
exit status code collisions with bash, and probably other shells.
The re-allocated codes are now mapped to constant values, set in *application/config/constants.php*,
and used throughout the CodeIgniter core. They would additionally be used in *index.php*,
but the constants file hasn't been loaded at that point, so the integer values are used
instead, and a comment follows each such use with amplifying information on why that
particular value was selected.
Finally, the errors documentation has been updated accordingly.
Signed-off-by: Daniel Hunsaker <danhunsaker@gmail.com>
diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php
index cc93b2e..ea8017e 100644
--- a/system/libraries/Trackback.php
+++ b/system/libraries/Trackback.php
@@ -212,7 +212,7 @@
public function send_error($message = 'Incomplete Information')
{
echo '<?xml version="1.0" encoding="utf-8"?'.">\n<response>\n<error>1</error>\n<message>".$message."</message>\n</response>";
- exit(0);
+ exit(EXIT_SUCCESS);
}
// --------------------------------------------------------------------
@@ -228,7 +228,7 @@
public function send_success()
{
echo '<?xml version="1.0" encoding="utf-8"?'.">\n<response>\n<error>0</error>\n</response>";
- exit(0);
+ exit(EXIT_SUCCESS);
}
// --------------------------------------------------------------------