The location of the PHP error log file depends on your PHP configuration. In most cases, the error log file is specified in the error_log directive in the php.ini configuration file.
To determine the location of the error log file on your system, you can use the phpinfo() function. Simply create a PHP script with the following code:
<?php phpinfo(); ?>
Save the script and run it in your web browser. This will display a page with information about your PHP configuration, including the location of the error log file.
Alternatively, you can use the ini_get() function to retrieve the value of the error_log directive from your php.ini file. For example:
<?php
echo ini_get('error_log');
?>
This will print the location of the error log file to the screen.
Keep in mind that the location of the error log file may be different on different systems, depending on how PHP was installed and configured. If you are unable to find the error log file using the methods described above, you may need to consult the documentation for your PHP installation or seek assistance from a qualified technician.