PHP array sort function_PHP tutorial

sort: This function assigns new key names to the cells in the array. This will delete the original keys rather than just reorder them.

rsort: This function sorts the array in reverse order (highest to lowest). Delete the original key names instead of just reordering them.

asort: Sort the array and maintain the index relationship

arsort: Sort the array in reverse and maintain the index relationship

ksort: Sort the array according to the key name, retaining the association between the key name and the data

krsort: Sort the array in reverse order by key name, retaining the association between key name and data

natsort: Sort alphanumeric strings while maintaining original key/value associations

natcasesort: Same as natsort sorting algorithm, but case-insensitive sorting