PHP Error Reporting

[jhopkins]

I have the same version of xampp running on several machines with the same php.ini file. However, one of my machines is not reporting errors. When there are no errors everything works fine, but when there is an error there is no html output. I set my .ini file to report errors to the browser and not the log file.

Error reporting settings:
error_reporting = E_ALL & E_NOTICE & E_DEPRECATED
display_errors = On
display_startup_errors = On
log_errors = Off
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
track_errors = Off
html_errors = On

Why is xampp not displaying errors only on one machine?

Also, I had one pc running the same version of xampp with the default .ini file. On this pc I not only got the basic error msg, but also the entire function/method stack leading to where the error occurred. Error was highlighted in orange, and the function stack was an html table showing function calls and what lines of the php scripts they were called on.

How can I get this more detailed error reporting on my other machines?