php usort() with order of precedence for json sorting -


i need sort json array key value pair in order of precedence(specialcharacters > numbers > lower case > uppercase). tried ascii code couldn't expected.

$arr1 = array (   0 =>    array (     'id' => 1,     'name' => 'b',     'value' => 'abc',     'order' => 6,   ),   1 =>    array (     'id' => 2,     'name' => 'a',     'value' => 'xyz',     'order' => 2,   ),   2 =>    array (     'id' => 3,     'name' => 'a',     'value' => 'ghi',     'order' => 1,   ),   3 =>    array (     'id' => 4,     'name' => '123',     'value' => 'xyz',     'order' => 2,   ),   4 =>    array (     'id' => 5,     'name' => 'd',     'value' => 'uvw',     'order' => 3,   ),   5 =>    array (     'id' => 6,     'name' => '@2',     'value' => 'def',     'order' => 3,   ), ); function cmp($a, $b) {     $at = iconv('utf-8', 'ascii//translit', $a['name']);     $bt = iconv('utf-8', 'ascii//translit', $b['name']);     return strcmp($at, $bt); } usort($arr1, "cmp"); print_r($arr1);

can me resolve it? 

<?php // obtain list of columns foreach ($arr1 $key => $row) {     $arr1[$key]  = $row['value']; }

ksort($arr1); ?>


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