php - Sorting a 3 dimensional array -

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i've got array this

array (     [0] => array         (             [0] => array                 (                     [szam] => 8                     [index] => 0                 )          )      [1] => array         (             [0] => array                 (                     [szam] => 1                     [index] => 0                 )              [1] => array                 (                     [szam] => 7                     [index] => 1                 )          )

i thought last cmp work fine

function maxszerintcsokkeno($item1,$item2) {     if ($item1['szam'] == $item2['szam']) return 0;     return ($item1['szam'] < $item2['szam']) ? 1 : -1; }

with foreach

foreach ($tomb $kulcs => $adat)  usort($adat,"maxszerintcsokkeno");

but dosen't anything, advise?

you're sorting temporary variable, meaning changes not applied. following should work you:

for($i = 0, $length = count($tomb); $i < $length; $i++) {     usort($tomb[$i], "maxszerintcsokkeno"); }

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