I've just installed Symphony 2.3.3 and I've getting this error after installation when I want to access the backend.

PHP Fatal error: Call to undefined function header_remove() in /Applications/MAMP/htdocs/diplostar/symphony/lib/boot/func.utilities.php on line 169

function header_remove() doesn't seem to be defined. Any ideas how this could be fixed?


please check system requirements bevor install/upgrade:

I guess your php version is befor 5.3

I have the exact same problem. From your answer I see that the function header_remove doesn't exist before 5.3.

BUT, everywhere I look on this site it says that I only need "PHP 5.2 or above" so it still should work, shouldn't it?

I look on this site

This site, sadly, is not up to date. The most accurate place to look for details on requirements is the readme file that ships with Symphony.

Sorry about the site, I'll look into that now.

Yes, sorry, this has been resolved in the latest 2.3.4RC1 and will be fixed in 2.3.4 (release this weekend)

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Symphony • Open Source XSLT CMS

Server Requirements

  • PHP 5.3-5.6 or 7.0-7.3
  • PHP's LibXML module, with the XSLT extension enabled (--with-xsl)
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