php 二维数组按指定的键值排序

/*二维数组按指定的键值排序*/
function array_sort($array,$keys,$type='asc'){
if(!isset($array) || !is_array($array) || empty($array)){
return '';
}
if(!isset($keys) || trim($keys)==''){
return '';
}
if(!isset($type) || $type=='' || !in_array(strtolower($type),array('asc','desc'))){
return '';
}
$keysvalue=array();
foreach($array as $key=>$val){
$val[$keys] = str_replace('-','',$val[$keys]);
$val[$keys] = str_replace(' ','',$val[$keys]);
$val[$keys] = str_replace(':','',$val[$keys]);
$keysvalue[] =$val[$keys];
}
asort($keysvalue); //key值排序
reset($keysvalue); //指针重新指向数组第一个
foreach($keysvalue as $key=>$vals) {
$keysort[] = $key;
}
$keysvalue = array();
$count=count($keysort);
if(strtolower($type) != 'asc'){
for($i=$count-1; $i>=0; $i--) {
$keysvalue[] = $array[$keysort[$i]];
}
}else{
for($i=0; $i $keysvalue[] = $array[$keysort[$i]];
}
}
return $keysvalue;
}

array_sort($a,'price');