PHP syntax: sort an associative array by value with asort
Contributed by qmchenry 
Tagged: PHP programming To sort an associative array by the array values, use asort.
asort($capitals);
An optional parameter (sort_flags) can be passed to asort to alter the way that it sorts the array. The following code will sort an associative array numerically by array value.
asort($ar, SORT_NUMERIC);
Without this option, the index values ‘15, 2, 1′ would be sorted ‘1, 15, 2′ and with the SORT_NUMERIC option, the values would be sorted 1, 2, 15.
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