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PHP数组入门-PHP培训九期线上班
AA射手座
Original
681 people have browsed it

1、创建数组

<?php
//空数组
$arr = [];

2、关联数组、索引数组

<?php
//索引数组
$arr = ['小明','小红','小强'];
//关联数组
$arr1 = ['xiaoming' => '小明','xiaohong' => '小红','xiaoqiang' => '小强];

3、访问数组的数据

<?php
$arr = ['小明','小红','小强'];
echo $arr[0];
$arr1 = ['xiaoming' => '小明','xiaohong' => '小红','xiaoqiang' => '小强];
print_r($arr1['xiaoming']);

4、二维数组

<?php
//二维数组
$arr = [
    [
    'name' => '小明',
    'sex' => '男'
    ],
    [
    'name' => '小红',
    'sex' => '女'
    ],
    [
    'name' => '小强',
    'sex' => '男'
    ]
    ];
//三维数组
$arr = [
    [
    'name' => '小明',
    'sex' => '男',
    'skill' => [
                '跆拳道',
                '游泳',
                '绘画'
                ]
    ],
    [
    'name' => '小红',
    'sex' => '女',
    'skill' => [
                '唱歌',
                '跳舞',
                '体操'
                ]
    ],
    [
    'name' => '小强',
    'sex' => '男',
    'skill' => [
                '武术',
                '田径',
                '编程'
                ]
    ]
    ];

5、二维数组循环、三维数组循环

<?php
//二维数组循环
$arr = [
    [
    'name' => '小明',
    'sex' => '男'
    ],
    [
    'name' => '小红',
    'sex' => '女'
    ],
    [
    'name' => '小强',
    'sex' => '男'
    ]
    ];
foreach($arr as $v){
    echo '姓名:'.$v['name'].'.'.'性别:'.$v['sex'];
    echo '<br>';
    };
//三维数组循环
$arr1 = [
    [
    'name' => '小明',
    'sex' => '男',
    'skill' => [
                '跆拳道',
                '游泳',
                '绘画'
                ]
    ],
    [
    'name' => '小红',
    'sex' => '女',
    'skill' => [
                '唱歌',
                '跳舞',
                '体操'
                ]
    ],
    [
    'name' => '小强',
    'sex' => '男',
    'skill' => [
                '武术',
                '田径',
                '编程'
                ]
    ]
    ];
foreach($arr1 as $k => $v){
    echo '姓名:'.$v['name'].'...';
    echo '性别:'.$v['sex'].'...';
    echo '技能:';
    foreach($v['skill'] as $kk => $vv){
    echo $vv.'.';
    };
    echo '<br>';
    };

 以上代码全部是在浏览器中手打,手打代码的时候会经常忘记敲,和;,估计写熟练了以后会避免此类低级错误,稍后会验证一下有无错误,有的话会马上改过来。关于三维数组的循环还是有一点懵,应该多写几遍就会掌握了。后面附上今天晚上的课堂笔记。

210500715.jpg

Correcting teacher:查无此人查无此人

Correction status:qualified

Teacher's comments:完成的不错。
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