PHP exit function

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exit

(PHP 3, PHP 4, PHP 5)

Terminates execution of the script.

If status is a string, this function prints the
status, if set as a string just before exiting.

If status is an integer, that
value will also be used as the exit status. 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.

No value is returned.

Example 1. exit() example

 
$filename = '/path/to/data-file';
$file = fopen($filename, 'r')
    or exit("unable to open file ($filename)");

Example 2. exit() status example

 
//exit program normally
exit;
exit();
exit(0);
 
//exit with an error code
exit(1);
exit(0376); //octal

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().