Use PHP functions in JavaScript

JavaScript array_key_exists

Checks if the given key or index exists in the array 

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function array_key_exists ( key, search ) {
    // Checks if the given key or index exists in the array  
    // 
    // version: 909.322
    // discuss at: http://phpjs.org/functions/array_key_exists    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Felix Geisendoerfer (http://www.debuggable.com/felix)
    // *     example 1: array_key_exists('kevin', {'kevin': 'van Zonneveld'});
    // *     returns 1: true
    // input sanitation    if (!search || (search.constructor !== Array && search.constructor !== Object)){
        return false;
    }
 
    return key in search;}
external links: original PHP docs | raw js source

Examples

Running

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array_key_exists('kevin', {'kevin': 'van Zonneveld'});

Should return

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true

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

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Authors

Thanks to the following developers, you get to have array_key_exists goodness in JavaScript.

Comments

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Use: 
[CODE]
your_stuff('here');
[/CODE]
for proper code formatting
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More functions

In this category

array
array_change_key_case
array_chunk
array_combine
array_count_values
array_diff
array_diff_assoc
array_diff_key
array_diff_uassoc
array_diff_ukey
array_fill
array_fill_keys
array_filter
array_flip
array_intersect
array_intersect_assoc
array_intersect_key
array_intersect_uassoc
array_intersect_ukey
» array_key_exists
array_keys
array_map
array_merge
array_merge_recursive
array_multisort
array_pad
array_pop
array_product
array_push
array_rand
array_reduce
array_replace
array_replace_recursive
array_reverse
array_search
array_shift
array_slice
array_splice
array_sum
array_udiff
array_udiff_assoc
array_udiff_uassoc
array_uintersect
array_uintersect_assoc
array_uintersect_uassoc
array_unique
array_unshift
array_values
array_walk
array_walk_recursive
arsort
asort
compact
count
current
each
end
extract
in_array
key
krsort
ksort
natcasesort
natsort
next
pos
prev
range
reset
rsort
shuffle
sizeof
sort
uasort
uksort
usort

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