fix #43 - suppport php from 5.3

[DeyV]

To achievement support by older php versions, this package must support all php versions supported by the components that require it

[weierophinney]

We actually chose specifically NOT to do this.

We feel it should be a minimum requirement that users migrating be on a supported version of PHP, whether that's from php.net, or vendors who provide other LTS versions that contain backported security fixes. The earliest version we could find supported by a commercial vendor still is 5.6.

[kynx]

@weierophinney FWIW, RHEL6 shipped PHP5.3.3 and is getting maintenance updates until Nov 2020. RHEL7 has PHP5.4 and is getting maintenance updates until 2024: https://wiki.centos.org/About/Product

How I wish they wouldn't! 😢

[DeyV]

@weierophinney If you make this decision - all old tags with declare support for older then 5.6 php should be removed
In other way - laminas will have hundreds tickets about problem with composer

Or you can make special version of this bridge - marked as obsolete - but work on old php anyway

Errors like this

 - laminas/laminas-escaper 2.2.0 requires laminas/laminas-zendframework-bridge ^1.0 -> satisfiable by laminas/laminas-zendframework-bridge[1.0.0].

...

  - laminas/laminas-zendframework-bridge 1.0.0 requires php ^5.6 || ^7.0 -> your PHP version (5.3.29) does not satisfy that requirement.
  - Installation request for laminas/laminas-escaper ^2.2 -> satisfiable by laminas/laminas-escaper[2.2.0, 2.2.1, 2.2.10, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.2.8, 2.2.9, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7, 2.3.8, 2.3.9, 2.4.0, 2.4.1, 2.4.10, 2.4.11, 2.4.12, 2.4.13, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9, 2.5.0, 2.5.1, 2.5.2, 2.6.0, 2.6.1].