The array_reverse( )
function reverses the
elements in an array. However, it’s often possible
to avoid this operation. If you wish to reverse an array
you’ve just sorted, modify the sort to do the
inverse. If you want to reverse a list you’re about
to loop through and
process, just invert the loop. Instead of:
for ($i = 0, $size = count($array); $i < $size; $i++) { ... }
do the following:
for ($i = count($array) - 1; $i >=0 ; $i--) { ... }
However, as always, use a for
loop only on a
tightly packed array.
Another alternative would be, if possible, to invert the order
elements are placed into the array. For instance, if
you’re populating an array from a series of rows
returned from a database, you should be able to modify the query to
ORDER DESC
. See your database manual for the exact
syntax for your database.
Documentation on array_reverse( )
at
http://www.php.net/array-reverse.
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