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Title: PHP: array_keys - Manual

X Title: PHP: array_keys - Manual

Open Graph Description: Return all the keys or a subset of the keys of an array

X Description: Return all the keys or a subset of the keys of an array

Description	Return all the keys or a subset of the keys of an array
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« array_key_last	https://www.php.net/function.array-key-last.php
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array	https://www.php.net/language.types.array.php
array	https://www.php.net/language.types.array.php
array	https://www.php.net/language.types.array.php
mixed	https://www.php.net/language.types.mixed.php
bool	https://www.php.net/language.types.boolean.php
false	https://www.php.net/reserved.constants.php#constant.false
array	https://www.php.net/language.types.array.php
array_values()	https://www.php.net/function.array-values.php
array_combine()	https://www.php.net/function.array-combine.php
array_key_exists()	https://www.php.net/function.array-key-exists.php
array_search()	https://www.php.net/function.array-search.php
Learn How To Improve This Page	https://github.com/php/doc-base/blob/master/README.md
Submit a Pull Request	https://github.com/php/doc-en/blob/master/reference/array/functions/array-keys.xml
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＋add a note	https://www.php.net/manual/add-note.php?sect=function.array-keys&repo=en&redirect=https://www.php.net/manual/en/function.array-keys.php
Array Functions	https://www.php.net/ref.array.php
array	https://www.php.net/function.array.php
array_all	https://www.php.net/function.array-all.php
array_any	https://www.php.net/function.array-any.php
array_change_key_case	https://www.php.net/function.array-change-key-case.php
array_chunk	https://www.php.net/function.array-chunk.php
array_column	https://www.php.net/function.array-column.php
array_combine	https://www.php.net/function.array-combine.php
array_count_values	https://www.php.net/function.array-count-values.php
array_diff	https://www.php.net/function.array-diff.php
array_diff_assoc	https://www.php.net/function.array-diff-assoc.php
array_diff_key	https://www.php.net/function.array-diff-key.php
array_diff_uassoc	https://www.php.net/function.array-diff-uassoc.php
array_diff_ukey	https://www.php.net/function.array-diff-ukey.php
array_fill	https://www.php.net/function.array-fill.php
array_fill_keys	https://www.php.net/function.array-fill-keys.php
array_filter	https://www.php.net/function.array-filter.php
array_find	https://www.php.net/function.array-find.php
array_find_key	https://www.php.net/function.array-find-key.php
array_first	https://www.php.net/function.array-first.php
array_flip	https://www.php.net/function.array-flip.php
array_intersect	https://www.php.net/function.array-intersect.php
array_intersect_assoc	https://www.php.net/function.array-intersect-assoc.php
array_intersect_key	https://www.php.net/function.array-intersect-key.php
array_intersect_uassoc	https://www.php.net/function.array-intersect-uassoc.php
array_intersect_ukey	https://www.php.net/function.array-intersect-ukey.php
array_is_list	https://www.php.net/function.array-is-list.php
array_key_exists	https://www.php.net/function.array-key-exists.php
array_key_first	https://www.php.net/function.array-key-first.php
array_key_last	https://www.php.net/function.array-key-last.php
array_keys	https://www.php.net/function.array-keys.php
array_last	https://www.php.net/function.array-last.php
array_map	https://www.php.net/function.array-map.php
array_merge	https://www.php.net/function.array-merge.php
array_merge_recursive	https://www.php.net/function.array-merge-recursive.php
array_multisort	https://www.php.net/function.array-multisort.php
array_pad	https://www.php.net/function.array-pad.php
array_pop	https://www.php.net/function.array-pop.php
array_product	https://www.php.net/function.array-product.php
array_push	https://www.php.net/function.array-push.php
array_rand	https://www.php.net/function.array-rand.php
array_reduce	https://www.php.net/function.array-reduce.php
array_replace	https://www.php.net/function.array-replace.php
array_replace_recursive	https://www.php.net/function.array-replace-recursive.php
array_reverse	https://www.php.net/function.array-reverse.php
array_search	https://www.php.net/function.array-search.php
array_shift	https://www.php.net/function.array-shift.php
array_slice	https://www.php.net/function.array-slice.php
array_splice	https://www.php.net/function.array-splice.php
array_sum	https://www.php.net/function.array-sum.php
array_udiff	https://www.php.net/function.array-udiff.php
array_udiff_assoc	https://www.php.net/function.array-udiff-assoc.php
array_udiff_uassoc	https://www.php.net/function.array-udiff-uassoc.php
array_uintersect	https://www.php.net/function.array-uintersect.php
array_uintersect_assoc	https://www.php.net/function.array-uintersect-assoc.php
array_uintersect_uassoc	https://www.php.net/function.array-uintersect-uassoc.php
array_unique	https://www.php.net/function.array-unique.php
array_unshift	https://www.php.net/function.array-unshift.php
array_values	https://www.php.net/function.array-values.php
array_walk	https://www.php.net/function.array-walk.php
array_walk_recursive	https://www.php.net/function.array-walk-recursive.php
arsort	https://www.php.net/function.arsort.php
asort	https://www.php.net/function.asort.php
compact	https://www.php.net/function.compact.php
count	https://www.php.net/function.count.php
current	https://www.php.net/function.current.php
end	https://www.php.net/function.end.php
extract	https://www.php.net/function.extract.php
in_array	https://www.php.net/function.in-array.php
key	https://www.php.net/function.key.php
key_exists	https://www.php.net/function.key-exists.php
krsort	https://www.php.net/function.krsort.php
ksort	https://www.php.net/function.ksort.php
list	https://www.php.net/function.list.php
natcasesort	https://www.php.net/function.natcasesort.php
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