I have array like:
array(
0 => 'a',
1 => 'b',
2 => 'c'
);
I need to convert it to:
array(
'a',
'b',
'c'
);
What's the fastest way to swap keys with values?
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2array_flip maybe? It does exactly what you said, not what you want (because what you want is not really meaningful).Michael J.V.– Michael J.V.2011-07-27 13:25:23 +00:00Commented Jul 27, 2011 at 13:25
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2Use array_flip to swap keys with values.Jasir– Jasir2014-07-12 19:44:22 +00:00Commented Jul 12, 2014 at 19:44
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6 Answers
PHP has the array_flip function which exchanges all keys with their corresponding values, but you do not need it in your case because the arrays are the same.
array(
'a',
'b',
'c'
);
This array has the keys 0, 1, and 2.
Comments
array(
0 => 'a',
1 => 'b',
2 => 'c'
);
and
array(
'a',
'b',
'c'
);
are the same array, the second form has 0,1,2 as implicit keys. If your array does not have numeric keys you can use array_values function to get an array which has only the values (with numeric implicit keys).
Otherwise if you need to swap keys with values array_flip is the solution, but from your example is not clear what you're trying to do.
Comments
Use array_flip(). That will do to swap keys with values. However, your array is OK the way it is. That is, you don't need to swap them, because then your array will become:
array(
'a' => 0,
'b' => 1,
'c' => 2
);
not
array(
'a',
'b',
'c'
);
Comments
Comments
$flipped_arr = array_flip($arr); will do that for you.
