<?php
$arr1 = array();
var_dump( $arr1);
echo '<hr>';
$arr2 = [];
var_dump($arr2);
echo '<hr>';
//索引数组
$arr = [
10,
11,
'淡月酱',
'不甜的淡月',
12.9,
null
];
//打印数组
print_r( $arr );
echo '<hr>';
//关联数组
$arr2 = [
'10001' => '黄埔区',
'10002' => '杨浦区',
'10003' => '徐汇区',
'10004' => '长宁区',
'10005' => '浦东新区',
];
print_r( $arr2 );
echo '<hr>';
//数组的输出
//方括号里面写的是key 输出的是值
print_r( $arr2 ['10002']);
echo '<hr>';
echo $arr2[ '10003' ];
echo '<hr>';
//多维数组
$arr3 = [
[
'name' => '淡月酱',
'age' => "22岁",
'job' => '学生',
'jineng' => [
'吃饭',
'睡觉',
'写代码',
]
],
[ 'name' => '溪上花间',
'age' => "22岁",
'job' => '学生',
'jineng' => [
'吃饭',
'睡觉',
'打豆豆',
]
],
[
'name' => '小小挽歌',
'age' => "21岁",
'job' => '社畜',
'jineng' => [
'吃饭',
'睡觉',
'上班',
]
],
];
foreach ( $arr3 as $v ){
//print_r($v['name'] );
echo '<hr>';
echo '姓名:' .$v['name'] .'---';
echo '年龄:' .$v['age'] .'---';
echo '职业:' .$v['job'] .'---';
echo '技能:';
foreach ($v ['jineng'] as $vv)
echo $vv.'-';
echo '<hr>';
}