Constantele de mai jos sunt întotdeauna disponibile ca parte componentă a nucleului PHP.
CASE_LOWER
(int)
CASE_LOWER
is used with
array_change_key_case() and is used to convert array
keys to lower case. This is also the default case for
array_change_key_case().
CASE_UPPER
(int)
CASE_UPPER
is used with
array_change_key_case() and is used to convert array
keys to upper case.
Sorting order flags:
SORT_ASC
(int)
SORT_ASC
is used with
array_multisort() to sort in ascending order.
SORT_DESC
(int)
SORT_DESC
is used with
array_multisort() to sort in descending order.
Sorting type flags: used by various sort functions
SORT_REGULAR
(int)
SORT_REGULAR
is used to compare items normally.
SORT_NUMERIC
(int)
SORT_NUMERIC
is used to compare items numerically.
SORT_STRING
(int)
SORT_STRING
is used to compare items as strings.
SORT_LOCALE_STRING
(int)
SORT_LOCALE_STRING
is used to compare items as
strings, based on the current locale. Added in PHP 5.0.2.
SORT_NATURAL
(int)
SORT_NATURAL
is used to compare items as
strings using "natural ordering" like natsort(). Added in PHP 5.4.0.
SORT_FLAG_CASE
(int)
SORT_FLAG_CASE
can be combined
(bitwise OR) with
SORT_STRING
or
SORT_NATURAL
to sort strings case-insensitively. Added in PHP 5.4.0.
Filter flags:
ARRAY_FILTER_USE_KEY
(int)
ARRAY_FILTER_USE_KEY
is used with
array_filter() to pass each key as the first argument to the given callback function.
Added in PHP 5.6.0.
ARRAY_FILTER_USE_BOTH
(int)
ARRAY_FILTER_USE_BOTH
is used with
array_filter() to pass both value and key to the given callback function.
Added in PHP 5.6.0.
COUNT_NORMAL
(int)
COUNT_RECURSIVE
(int)
EXTR_OVERWRITE
(int)
EXTR_SKIP
(int)
EXTR_PREFIX_SAME
(int)
EXTR_PREFIX_ALL
(int)
EXTR_PREFIX_INVALID
(int)
EXTR_PREFIX_IF_EXISTS
(int)
EXTR_IF_EXISTS
(int)
EXTR_REFS
(int)