Question

How to get the longest key length from an array in PHP

Answer 1

$arr = array("aa"=>1, "ubbb"=>2, "cccccc"=>3, "dddd"=>4, "eeee"=>5);

$arr_len = array_map('strlen', array_keys($arr));

print_r($arr_len);
 
echo max($arr_len);



/*
run:

6
 
*/

 

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