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exit

Name

exit — Exits the current script.

Synopsis

void exit([return_value]); mixed return_value (optional): Value that the script will return after exiting

Returns

null

Description

exit() is used to stop the execution of the current script. If an argument is passed to exit() , this value is returned by the script when it exits. See the following examples.

Version

PHP Version: 3+, 4+

Example

Example 753. Use exit() to exit a script

<?php

$file = 'some-nonexistent-file.txt';
$fp = fopen ($file, 'r')
    or exit ();
?>

Example 754. Use exit() to return the exit value of a PHP script

// Save this script and then run it from the command line
// i.e. php -f exit.php
// Alternatively, call the script from within another PHP script
// using the program execution functions

// Note that some return values (notably negative values) 
// may not work on some platforms

<?php
exit (-1);
?>

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.