实例
<?php
echo '<h2>1.创建数组</h2>';
$arr = array();
var_dump($arr);
$arr = [];
var_dump($arr);
echo '<h2>2. 关联数组、索引数组</h2>';
$arr = [
'杨小洋',
'杨中洋',
'杨大洋',
];
var_dump($arr);
$arr = [
'namex' => '杨小洋',
'namez' => '杨中洋',
'named' => '杨大洋',
];
var_dump($arr);
echo '<h2>3. 访问数组的数据</h2>';
$arr = [
'杨小洋',
'杨中洋',
'杨大洋',
];
echo $arr[0];
echo '<br/>';
echo $arr[1];
echo '<br/>';
echo $arr[2];
echo '<hr/>';
$arr = [
'namex' => '杨小洋',
'namez' => '杨中洋',
'named' => '杨大洋',
];
echo $arr['namex'];
echo '<br/>';
echo $arr['namez'];
echo '<br/>';
echo $arr['named'];
echo '<br/>';
echo '<h2>4. 二维数组、三维数组</h2>';
$arr = [
[
'name' => '杨小洋',
'age' => 18,
'xingbie' => '男',
],
[
'name' => '杨中洋',
'age' => 28,
'xingbie' => '女',
],
[
'name' => '杨大洋',
'age' => '38',
'xingbie' => '男',
],
];
var_dump($arr);
echo '<hr/>';
echo $arr[1]['age'];
echo '<hr/>';
print_r($arr);
echo '<hr/>';
$arr = [
[
'name' => '杨大洋',
'age' => 18,
'aihao' => [
'学习',
'游戏',
'写作业',
],
],
[
'name' => '杨中洋',
'age' => 28,
'aihao' => [
'学习',
'游戏',
'写作业',
],
],
[
'name' => '杨大洋',
'age' => 38,
'aihao' => [
'学习',
'游戏',
'写作业',
],
],
];
var_dump($arr);
echo '<hr/>';
echo $arr[1]['aihao'][1].'......';
echo '<hr/>';
print_r($arr);
echo '<hr/>';
echo '<h2>5. 二维数组循环，三维数组循环</h2>';
$arr = [
[
'name' => '杨小洋',
'age' => 18,
'xingbie' => '男',
],
[
'name' => '杨中洋',
'age' => 28,
'xingbie' => '女',
],
[
'name' => '杨大洋',
'age' => '38',
'xingbie' => '男',
],
];
foreach ($arr as $k => $v) {
echo $v['name'];
echo '<br/>';
}
echo '<hr/>';
foreach ($arr as $k => $v) {
foreach ($v as $key => $vv) {
echo $vv;
echo '<br/>';
}
}
echo '<hr/>';
$arr = [
[
'name' => '杨大洋',
'age' => 18,
'aihao' => [
'学习',
'游戏',
'写作业',
],
],
[
'name' => '杨中洋',
'age' => 28,
'aihao' => [
'学习',
'游戏',
'写作业',
],
],
[
'name' => '杨大洋',
'age' => 38,
'aihao' => [
'学习',
'游戏',
'写作业',
],
],
];
foreach ($arr as $v) {
echo $v['name'];
echo '<br/>';
echo $v['age'];
echo '<br/>';
foreach ($v['aihao'] as $vv) {
echo $vv;
echo '<br/>';
}
echo '<hr/>';
}
?>运行实例 »
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