PHP Startup: Unable to load dynamic library
Posted by The Curious Website Designer | Posted on Fri 9 Feb 2018
My Apache log was filling up with this error which clearly needed fixing, but was also making it very difficult to find the cause of other problems because they were lost in a mass of PHP Startup entries.
Heres how I eventually fixed it.
The full entry actually consisted of two (very long) lines:
- [Fri Feb 09 03:22:17.832535 2018] [:error] [pid 14170:tid 140256384907008] [client 40.77.167.95:15043] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20131226/php_mbstring.dll' - /usr/local/lib/php/extensions/no-debug-non-zts-20131226/php_mbstring.dll: cannot open shared object file: No such file or directory in Unknown on line 0
- [Fri Feb 09 03:22:17.832859 2018] [:error] [pid 14170:tid 140256384907008] [client 40.77.167.95:15043] PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20131226/php_exif.dll' - /usr/local/lib/php/extensions/no-debug-non-zts-20131226/php_exif.dll: cannot open shared object file: No such file or directory in Unknown on line 0
'Googling' the error suggested that the problem was that there was an entry in php.ini 'extension=. . .' or 'zend_extension=. . .'.
Although I did find an entry
- ;extension=php_mbstring.dll
followed by
- ;extension=php_exif.dll ; Must be after mbstring as it depends on it
the semi-colon at the beginning of the line meant that the instruction was commented out and was not being processed.
After much more researching, I found another possible solution - the mbstring extension was not installed, so install it !
So using PuTTY (see here) I entered:
(Note that I changed the underscore from the filename in the error log to a hyphen).
I also tried:
but that was already installed. (The php_exif error message was because php_exif is dependent on php_mbstring which wasn't installed leading to the php_exif problem).
Next restart the apache server with:
And that fixed the problem for me.
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Tags: apache error, problem solving