Call to undefined function filter_var() on FreeBSD

· Ruben Schade · May 17, 2026, 8:37 a.m.
freebsd PHP Server Management Package Installation
Summary
The author encountered a 'Call to undefined function filter_var()' error after upgrading a FreeBSD server. The solution is to install the 'php84-filter' package using the command: # pkg install [-j $JAIL] php84-filter. The post acknowledges the maintainer of the port.
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