如果从控制台或浏览器请求运行脚本，如何检查PHP？

Question

I tried things like $_ENV['CLIENTNAME'] == 'Console' but that seems to work on only certain OS's (worked in windows, not linux).

I tried !empty($_ENV['SHELL']) but that doesn't work always either...

Is there a way to check this that will work in all OS's/environments?

Answer 1

Use php_sapi_name()

Returns a lowercase string that describes the type of interface (the Server API, SAPI) that PHP is using. For example, in CLI PHP this string will be "cli" whereas with Apache it may have several different values depending on the exact SAPI used.

For example:

$isCLI = ( php_sapi_name() == 'cli' );

You can also use the constant PHP_SAPI

Answer 2

Check on http://php.net/manual/en/features.commandline.php#105568 "PHP_SAPI" Constant

<?php
if (PHP_SAPI === 'cli')
{
   // ...
}
?> 

Answer 3

我知道这是一个老问题，但是为了记录，我看到没有User-Agent头的HTTP请求进入，在这种情况下PHP不会自动定义HTTP_USER_AGENT。

Answer 4

if ($argc > 0) {
    // Command line was used
} else {
    // Browser was used
}

$argc coounts the amount of arguments passed to the command line. Simply using php page.php, $argc will return 1

Calling page.php with a browser, $argc will return NULL

Answer 5

One solution is to check whether STDIN is defined:

if (!defined("STDIN")) {
    die("Please run me from the console - not from a web-browser!");
}

Answer 6

检查HTTP_USER_AGENT，它应该存在于http请求中