8月24日作业

实例

<meta charset="utf-8">
<!--一、数组数组与字符串变量之间的转换-->
<h3>数组与字符串变量之间的转换</h3>
<?php
list($name, $course, $grade) = ['小龙女','php',80];
echo $name,'的"',$course,'"课程成功是：',$grade ,'<hr>';
//关联数组
$arr1 = ['id'=>1,'name'=>'杨过','sex'=>'male','salary'=>8000];
echo var_export(extract($arr1),true);
echo $id,$name,$sex,$salary;
echo '<hr>';
//3.compact(): 将变量转为关联数组
$name = '陈近南';
$fation = '天地会';
$position = '总的主';
$arr = compact('name','fation','position');
echo var_export($arr,true),'<hr>';
//4.explode 将字符串转换成数组
echo '<pre>';
$lang = 'c,php,c++,java,css,go';
echo var_export(explode(',',$lang)),'<br>';
echo var_export(explode(',',$lang,3)),'<br>';
echo var_export(explode(',',$lang,-2)),'<br>';
//5.implode  分散拼接
$arr = ['good','morning','big','and'];
echo var_export(implode('_',$arr));
//二、数组元素回掉
$arr1 = [5,2,'',null,22,false,'php'];
echo '<pre>';
echo var_export($arr1,true),'<br>';