<?php
//$arr =10;
//$arr ='apple';
//创建数组
$arr1 = array();
var_dump( $arr1);
echo '<hr>';
$arr2 = [];
var_dump($arr2);
echo '<hr>';
//索引数组
$arr = [
10,
11,
'欧阳克',
'朱老师',
12.9,
null
];
//打印数组
print_r( $arr );
echo '<hr>';
//关联数组
$arr2 = [
'10001' => '朝阳区',
'10002' => '海淀区',
'10003' => '房山区',
'10004' => '大兴区',
];
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' => '欧阳克',
'age' => "18岁",
'job' => '讲师',
'jineng' => [
'php',
'html',
'js',
]
],
[ 'name' => '西门',
'age' => "17岁",
'job' => '讲师',
'jineng' => [
'php',
'html',
'js',
]
],
[
'name' => '朱老师',
'age' => "120岁",
'job' => '讲师',
'jineng' => [
'php',
'html',
'js',
]
],
];
print_r( $arr3[1]['name']);
echo '<hr>';
print_r($arr3[1]['jineng'][0]);
echo '<hr>';
*/
//php数组循环
//二维数组循环
$arr3 = [
[
'name' => '欧阳克',
'age' => "18岁",
'job' => '讲师',
'jineng' => [
'php',
'html',
'js',
]
],
[ 'name' => '西门',
'age' => "17岁",
'job' => '讲师',
'jineng' => [
'php',
'html',
'js',
]
],
[
'name' => '朱老师',
'age' => "120岁",
'job' => '讲师',
'jineng' => [
'php',
'html',
'js',
]
],
];
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>';
}