Simplify the code and use zend_hash_next_index_insert()
Fixing typo in test for array_column()
array_column: Cleaning up, as recommended in pull request #56 comments
array_column: Improved tests
array_column: Using add_next_index_zval() at nikic's recommendation.
array_column: Adding test for IS_OBJECT and converting object to string
Cleaning up a memory leak.
array_column: Implement ability to specify an index column
array_column: Set array_pluck as an alias for array_column
fixed alternate form for 'x' and 'X' formats

same fix exists in original code:
https://svn.apache.org/viewvc?view=revision&revision=1152309
Merge branch 'PHP-5.4' into PHP-5.5
Merge branch 'PHP-5.5'
different OSes have different messages, and that's not what the test is about anyway
fix bug #63982: isset() inconsistently produces a fatal error on protected property
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  fix bug #63982: isset() inconsistently produces a fatal error on protected property
  different OSes have different messages, and that's not what the test is about anyway
Merge branch 'PHP-5.5'

* PHP-5.5:
  fix bug #63982: isset() inconsistently produces a fatal error on protected property
  different OSes have different messages, and that's not what the test is about anyway
Tinker with UPGRADING's wording for the format string changes for clarity.
Merge branch 'PHP-5.5'

* PHP-5.5:
  Tinker with UPGRADING's wording for the format string changes for clarity.
Fixed bug #63980 (object members get trimmed by zero bytes)
Merge branch 'PHP-5.5'