- uasort: documentation ( source)
- print_r: documentation ( source)
<?php
echo "<pre>";
$activeSkillList = new ArrayObject();
$activeSkillList['U1_1021002'] = array('refCardId'=> 'U1_1021002');
$activeSkillList['U3_1052005'] = array('refCardId'=> 'U3_1052005');
print_r($activeSkillList);
$tmp = $activeSkillList->getArrayCopy();
print_r($tmp);
uasort($tmp, function($skill1, $skill2) {
return $skill1['refCardId'] - $skill2['refCardId'];
});
print_r($tmp);