add array_column()
Merge branch 'PHP-5.5'

* PHP-5.5:
  add array_column()
fix memory leak

the value shouldn't be ref, use z_add_ref is enough
fix memory leak

the value shouldn't be ref, use z_add_ref is enough
Fixed bug #64432 (more empty delimiter warning in strX methods)
Merge branch 'PHP-5.4' into PHP-5.5
Merge branch 'PHP-5.5'
Fix test after f8b91d9acff10ede7bd3f2bc631794a3abef8ff7
Merge branch 'PHP-5.4' into PHP-5.5
Merge branch 'PHP-5.5'
Fixed bug #64239 (Debug backtrace changed behavior since 5.4.10 or 5.4.11)
Merge branch 'PHP-5.4' into PHP-5.5
Update NEWS
Merge branch 'PHP-5.5'
Fix bug in reflectionClass relate to #64239
Merge branch 'PHP-5.4' into PHP-5.5
Merge branch 'PHP-5.5'
Add OPCache ini settings to php.ini
Merge branch 'PHP-5.5'

* PHP-5.5:
  Add OPCache ini settings to php.ini
Tweaks an add OPcache info to UPGRADING