How to check with PHP if the script is being run from the console or browser request?
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
Check on http://php.net/manual/en/features.commandline.php#105568 "PHP_SAPI" Constant
<?phpif (PHP_SAPI === 'cli'){ // ...}?>
I know this is an old question, but for the record, I see HTTP requests coming in without a User-Agent header and PHP does not automatically define HTTP_USER_AGENT in this case.