Error after add extension=ds.so to php.ini

[akondas]

If i run command

 php -d extension=ds.so some_file.php

Then Ds extension works ok. But when i want add this line to php.ini:

extension=ds.so

Then php throw error:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20151012/ds.so'
 - /usr/lib/php/20151012/ds.so: undefined symbol: php_json_serializable_ce in Unknown on line 0

My PHP version:
PHP 7.0.3 on Ubuntu 14.04

[rtheunissen]

There is currently a hard dependency on the json extension, which is a bug because it shouldn't try to implement JsonSerializable if the json extension is not loaded.

Try enabling the json extension, or specifying ds.so after json is already enabled.

[akondas]

@rtheunissen thanks for the quick response. Unfortunately json extension is allready loaded:

Module 'json' already loaded

I check in get_loaded_extensions and json exist. Should i add something else to php.ini ?

[rtheunissen]

What's your output for php -m?

[rtheunissen]

I think it's just a loading order issue, potentially more than one .ini

What's your output for php -i | grep ini?

[akondas]

@rtheunissen ok, json extension was loaded in additional ini file (conf.d). To fix this problem i create new file (for example 30-ds.ini) with content extension=ds.so and put it in /etc/php/7.0/fpm/conf.d. Now ds extension is load as last:

Additional .ini files parsed => /etc/php/7.0/cli/conf.d/10-opcache.ini,
/etc/php/7.0/cli/conf.d/20-curl.ini,
/etc/php/7.0/cli/conf.d/20-gd.ini,
/etc/php/7.0/cli/conf.d/20-intl.ini,
/etc/php/7.0/cli/conf.d/20-json.ini,
/etc/php/7.0/cli/conf.d/20-mysqli.ini,
/etc/php/7.0/cli/conf.d/20-pdo_mysql.ini,
/etc/php/7.0/cli/conf.d/20-pdo_pgsql.ini,
/etc/php/7.0/cli/conf.d/20-pgsql.ini,
/etc/php/7.0/cli/conf.d/20-readline.ini,
/etc/php/7.0/cli/conf.d/30-ds.ini

Thanks for help 👍

[rtheunissen]

@nikic I'm facing issue again. Wouldn't this have been fixed in #34 ?

[nikic]

@rtheunissen #34 fixed the loading order issue for static builds. I guess to fix it for so's we should add

PHP_ADD_EXTENSION_DEP(ds, spl)
PHP_ADD_EXTENSION_DEP(ds, json)

to the config.m4.

[nikic]

The w32 variant is ADD_EXTENSION_DEP('ds', 'spl') etc.

[rtheunissen]

@nikic attempted to fix this in c2def79, rebuilt, still getting undefined symbol: php_json_serializable_ce. Am I missing something in the m4?

[yybalam]

Hello. I'm facing this issue too.
At moment I do what @itcraftsmanpl say. I think at least that solution must be documented at readme. I spend an hour before think in search on closed issues for an answer. 😅

But the extension is awesome. Thanks you guys. 😄

[rtheunissen]

Seems like the only solution is to not add ds.so directly to the main php.ini but to create a new one with a higher alphabetic ranking like @itcraftsmanpl did. This used to be part of the readme.

What's interesting here is that I'm only seeing this issue when I'm using a release build of PHP, ie. when I'm not building PHP myself. When I use phpbrew to build and install, adding to the main php.ini works just fine. I'm guessing static build vs dynamic?