find numeric key of associative index of array in array [duplicate]

Question

I can't understand how to get numeric index of "Index1" in such a structure:

$arr = array('Index','Index1' => array("one","two","three"),'Index2');

i'm trying to use array_search like so:

$index = array_search("Index1",$arr);

but it doesn't work; Thanks

The index is Index1. There's no "numeric index" for a string index. — deceze
– deceze ♦, Commented Sep 18, 2014 at 13:41
You could also write the array as array(0 => 'Index', 'Index1' => .., 1 => 'Index2') and produce the exact same structure — kero
– kero, Commented Sep 18, 2014 at 13:42

Steve · Accepted Answer · 2014-09-18 14:08:28Z

0

As mentioned, there is no numeric index for that element, as its key is a string.

However if you just want to find its position in the array:

$position = array_search("Index1",array_keys($arr),true);

answered Sep 18, 2014 at 13:42

Steve

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2 Comments

$position becomes 0 whick is not correct

@TraktorFieldwork Oops, forgot to set the 3rd parameter. See working edit