[前端小小白的学习之路]--PHP数组

$name1 = ‘张三‘;
$name2 = ‘李四‘;
$name3 = ‘王五‘;
$name4 = ‘赵六‘;
....

array();

$name = array(
    ‘张三‘,
    ‘李四‘,
    ‘王五‘,
    ‘赵六‘,
    
);

print_r($name[0])//打印结果：张三

$name = array(

‘name1‘=>"张三",
‘name2‘=>"李四",
‘name3‘=>"王五",
‘name4‘=>"赵六",

);

print_r($name[‘name1‘])//打印结果：张三

$name = array(

    ‘name1‘=>array(

    ‘张三‘,
    ‘李四‘,
    ‘王五‘,
    ‘赵六‘,

    ),
    ‘name2‘=>array(

    ‘王朝‘,
    ‘马汉‘,
    ‘张龙‘,
    ‘赵虎‘,

    ),

);

print_r($name[‘name1‘])//打印结果：Array ( [0] => 张三 [1] => 李四 [2] => 王五 [3] => 赵六 )
print_r($name[‘name1‘][0])//打印结果：张三

    $name = array();
    
    $name[0] = ‘张三‘;
    $name[1] = ‘李四‘;
    $name[3] = ‘王五‘;
    $name[]  = ‘赵六‘;

    print_r($name)//打印结果：Array ( [0] => 张三 [1] => 李四 [3] => 王五 [4] => 赵六 )

    $name = array(

        ‘name1‘=>‘张三‘,
        ‘name2‘=>‘李四‘,
        ‘name3‘=>‘王五‘,
        ‘name4‘=>‘赵六‘,

    );

    $keys = array_keys( $name );
    $values = array_values( $name );

    print_r(implode(‘,‘,$keys));//打印结果：name1,name2,name3,name4
    print_r(implode(‘,‘,$values))//打印结果：张三,李四,王五,赵六

foreach ($array as $value)
{
    要执行代码;
}

 $name = array(
        ‘name1‘ => array(
            ‘张三‘,
            ‘李四‘,
        ),
        ‘name2‘=> array(
            ‘王五‘,
            ‘赵六‘,
        )
    );

    foreach( $name as $k => $v ){
        echo $k;//打印结果：name1,name2,
        foreach( $v as $k2 => $v2 ){
            echo ‘---->‘ . $v2;//打印结果：name1---->张三---->李四,name2---->王五---->赵六,
        }
        echo ‘,‘;
    }