This seems to have affected perl as well, not just PHP. Here's a log snippet from apache's error.log:
apache2: Syntax error on line 210 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/perl.load: Cannot load /usr/lib/apache2/modules/mod_perl.so into server: /lib/x86_64-linux-gnu/libm.so.6: symbol __strtold_nan, version GLIBC_PRIVATE not defined in file libc.so.6 with link time reference
Again, a manual restart of Apache _seems_ to have fixed the problem.
This seems to have affected perl as well, not just PHP. Here's a log snippet from apache's error.log:
apache2: Syntax error on line 210 of /etc/apache2/ apache2. conf: Syntax error on line 1 of /etc/apache2/ mods-enabled/ perl.load: Cannot load /usr/lib/ apache2/ modules/ mod_perl. so into server: /lib/x86_ 64-linux- gnu/libm. so.6: symbol __strtold_nan, version GLIBC_PRIVATE not defined in file libc.so.6 with link time reference
Again, a manual restart of Apache _seems_ to have fixed the problem.