update composer.json to reflect required extensions and minimum PHP v…

[ghost]

…ersion as found by phpcompatinfo

[cirpo]

@fkooman sorry I missed this PR, going to check asap. thanks

[odino]

hey @fkooman how did you generate the chages on the composer.json?

[ghost]

@odino using http://php5.laurent-laville.org/compatinfo/ PHP CompatInfo (yum install php-bartlett-PHP-CompatInfo)

[cirpo]

@fkooman wow, thanks!

[odino]

👍

[cirpo]

@odino so we decided to go with PHP ">=5.4.8"? I didn't merge this PR because the discussion is still open here: #39

[odino]

@cirpo I actually checked if PHP 5.3 was still supported and it isnt, so I think it's not a big deal to require people to use a reasonably mdern version of php. I think, though, that we should change the major release in the next tag so that people do not get confused / screwed

[cirpo]

👍

[ghost]

According to phpcompatinfo the only reason why PHP 5.3 is not supported anymore is the use of the (new) OpenSSL constants (see them listed in #39) only available since 5.4.8 and the use of hash_equals (since 5.6.0beta1, but a wrapper exists).