Unix and Linux Discussions Tagged with exit status |
|
Thread / Thread Starter |
Last Post |
Replies |
Views |
Forum |
|
|
|
6 |
8,488 |
UNIX for Beginners Questions & Answers |
|
|
|
4 |
5,792 |
Shell Programming and Scripting |
|
|
|
8 |
2,153 |
UNIX for Beginners Questions & Answers |
|
|
|
10 |
2,436 |
Shell Programming and Scripting |
|
|
|
14 |
8,688 |
Shell Programming and Scripting |
|
|
|
4 |
1,476 |
Shell Programming and Scripting |
|
|
|
2 |
3,562 |
Shell Programming and Scripting |
|
|
|
1 |
2,025 |
UNIX for Dummies Questions & Answers |
|
|
|
7 |
5,458 |
Shell Programming and Scripting |
|
|
|
6 |
4,465 |
Shell Programming and Scripting |
|
|
|
2 |
6,775 |
Shell Programming and Scripting |
|
|
|
5 |
97,160 |
UNIX for Advanced & Expert Users |
|
|
|
2 |
46,124 |
Shell Programming and Scripting |
|
|
|
1 |
12,153 |
Shell Programming and Scripting |
|
|
|
1 |
8,110 |
HP-UX |
|
|
|
2 |
13,057 |
Shell Programming and Scripting |
|
|
|
7 |
50,170 |
UNIX for Dummies Questions & Answers |
|
|
|
1 |
4,172 |
Programming |
|
|
|
1 |
12,807 |
UNIX for Advanced & Expert Users |
|
|
|
3 |
7,809 |
UNIX for Dummies Questions & Answers |
EXIT(3) 1 EXIT(3)
exit - Output a message and terminate the current script
SYNOPSIS
void exit ([string $status])
DESCRIPTION
void exit (int $status)
Terminates execution of the script. Shutdown functions and object destructors will always be executed even if exit is called.
exit is a language construct and it can be called without parentheses if no $status is passed.
PARAMETERS
o $status
- If $status is a string, this function prints the $status just before exiting. If $status is an integer, that value will be used
as the exit status and not printed. Exit statuses should be in the range 0 to 254, the exit status 255 is reserved by PHP and
shall not be used. The status 0 is used to terminate the program successfully.
Note
PHP >= 4.2.0 does NOT print the $status if it is an integer.
RETURN VALUES
No value is returned.
EXAMPLES
Example #1
exit example
<?php
$filename = '/path/to/data-file';
$file = fopen($filename, 'r')
or exit("unable to open file ($filename)");
?>
Example #2
exit status example
<?php
//exit program normally
exit;
exit();
exit(0);
//exit with an error code
exit(1);
exit(0376); //octal
?>
Example #3
Shutdown functions and destructors run regardless
<?php
class Foo
{
public function __destruct()
{
echo 'Destruct: ' . __METHOD__ . '()' . PHP_EOL;
}
}
function shutdown()
{
echo 'Shutdown: ' . __FUNCTION__ . '()' . PHP_EOL;
}
$foo = new Foo();
register_shutdown_function('shutdown');
exit();
echo 'This will not be output.';
?>
The above example will output:
Shutdown: shutdown()
Destruct: Foo::__destruct()
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Note
This language construct is equivalent to die(3).
SEE ALSO
register_shutdown_function(3).
PHP Documentation Group EXIT(3)