Meta Refresh not working RH 9

is there a reason?

[henry0]

<meta http-equiv="refresh" content="5">

on my test bed using RH 9
I cannot refresh using the above

I am using a Meta refresh HTML within a PHP script
for I cannot send another header

do I miss something in RH or PHP setting?

thanks

regards
Henry

[MattyMoose]

Do you have to specify the URL to refresh to?

<META HTTP-EQUIV=Refresh CONTENT="10; URL=http://www.example.com/">

[henry0]

No I do not for the page I need to refresh is the same
in order to show new uploaded pic from my CMS

thanks

PS)
I found a way around using PHP, nevertheless
I would like knowing why it does not work on my test bed!