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$_SERVER[DOCUMENT_ROOT] in CLI or Cron

$_SERVER['DOCUMENT_ROOT'] will not be available in the CLI . The web server defines the document root. In the CLI , you are not using a web server, so there is no document root.

You can try to rely on environment variables, assuming they are set by your shell. For example, $_SERVER['PWD'] represents the current directory and $_SERVER['HOME'] represents the user's home directory.

But this example with PWD is irrelevant if you run the script from a different directory than the executable file. That is, PWD reflects the directory in which you are at the time of launch.

I will give my example , which allows you to calculate the directory of the file being launched:

<?php
$self = pathinfo(__FILE__, PATHINFO_BASENAME);
$document_root = rtrim(str_replace($self, '', __FILE__), '/');

$document_root will contain the directory where the executable file is located.

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