php - how to write an individual error_log for each file

Solution:

I solved this by declaring a new var before the include with the__FILE__ value.

$errorFileName = __FILE__;
include 'headers.php';
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and inside the headers.php I check if that variable is set then use it to set the error_log.

if (isset($errorFileName)) {
  ini_set('error_log', str_replace('.php', '', $errorFileName));
}
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