CODEWITHSUNDEEP
phparrays
jqheart
jqheart

Reputation: 767

How to construct a string using the keys of an array?

I need help in constructing a string concatenated using comma based on the key values of an array. It could be achieved using foreach loop, but is there any method similar to using implode() ?

This is the sample array I use,

array(5) { 
    [2280]=> string(1) "1" 
    [2138]=> string(1) "1" 
    [3194]=> string(1) "1" 
    [2396]=> string(1) "1" 
    [2944]=> string(1) "1" 
}

Thanks in advance !!!

Upvotes: 1

Views: 64

Answers (2)

Ron van der Heijden
Ron van der Heijden

Reputation: 15080

Can be done like:

echo implode(', ', array_keys(array(2280 => '1', 2138 => '1')));

Output:

2280, 2138

Upvotes: 1

Félix Adriyel Gagnon-Grenier
Félix Adriyel Gagnon-Grenier

Reputation: 8893

say your array is named $array, you can do it like that:

implode(',',array_keys($array))

array_keys will return the keys of your array in another array, which will then be used to implode the keys into the string you want.

that would generate the following string:

"2280,2138,3194,2396,2944"

Upvotes: 4

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