abstract：使用usort()对二维数组进行排序，使用strcmp()函数比较<?php $arr = [ ['id'=>'0','name'=>'admin','password'=>'123456','num&
使用usort()对二维数组进行排序，使用strcmp()函数比较
<?php
$arr = [
['id'=>'0','name'=>'admin','password'=>'123456','num'=>5],
['id'=>'1','name'=>'user','password'=>'7890123','num'=>1],
['id'=>'2','name'=>'member','password'=>'456789','num'=>6]
];
echo '<pre>' ,var_export($arr,true) ,'<hr>';
usort($arr,function ($m,$n){
return strcmp($m['num'],$n['num']);
});
echo var_export($arr,true) ,'<hr>';
Correcting teacher：查无此人Correction time：2019-06-13 09:11:09
Teacher's summary：完成的不错。php常用的函数记住就行了。继续加油
