<?php

?$students = array(

'2010'=>array('令狐沖',"59"),

'2011'=>array('林平之',"44"),

'2012'=>array('曲洋',"89"),

'2013'=>array('任盈盈',"92"),

'2014'=>array('向問(wèn)天',"93"),

'2015'=>array('任我行',"87"),

'2016'=>array('沖虛',"58"),

'2017'=>array('方正',"74"),

'2018'=>array('岳不群',"91"),

'2019'=>array('寧中則',"90"),

);//10個(gè)學(xué)生的學(xué)號(hào)、姓名、分?jǐn)?shù)，用數(shù)組存儲(chǔ)

?

foreach($students as $key=>$val)

{ //使用循環(huán)結(jié)構(gòu)遍歷數(shù)組,獲取學(xué)號(hào)?

? ? ?echo $key; //輸出學(xué)號(hào)

echo ":";

//循環(huán)輸出姓名和分?jǐn)?shù)

foreach($val as $v)

{

echo $v;?

? ? ? ? echo $val;

}

echo "<br />";

}

?>

請(qǐng)問(wèn)一下,根據(jù)我的理解$val對(duì)應(yīng)名字的值,但是并沒(méi)有輸出$val的值,只寫(xiě)了"echo $v;",為什么$val的值就跟著出來(lái)了?????