What potential issues can arise when using ksort to sort an array in PHP?

When using ksort to sort an array in PHP, one potential issue that can arise is that the keys are sorted as strings, which may not always produce the desired results when sorting mixed data types. To solve this issue, you can use the SORT_NUMERIC flag as the second parameter of the ksort function to sort the keys as numbers. 

$array = array(
    '1' => 'apple',
    '10' => 'banana',
    '2' => 'orange'
);

ksort($array, SORT_NUMERIC);

print_r($array);

Keywords

ksort array sorting PHP associative arrays key sorting

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