Search for highest key/index in an array

php arrays key highest
Raffael Luthiger picture Raffael Luthiger · May 25, 2011 · Viewed 102.4k times · Source

How can I get with PHP the highest key/index in an array? I know how to do it for the values.

E.g. From this array I would like to get "10" as an integer value:

$arr = array( 1 => "A", 10 => "B", 5 => "C" );

I know how I could program it, but I was asking myself if there as a function for this as well.

Answer

Gérald Croës picture Gérald Croës · May 25, 2011

This should work fine 

$arr = array( 1 => "A", 10 => "B", 5 => "C" );
max(array_keys($arr));

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