Php 插入和删除阵列中的项目(&A);重置键值
这是我的阵列:Php 插入和删除阵列中的项目(&A);重置键值,php,arrays,Php,Arrays,这是我的阵列: $array = array( 0 => 'a', 1 => 'b', 2 => 'c', 3 => 'd', 4 => 'e', 5 => 'f', ); 现在,我想删除3-unset($array[3])-但结果如下: $array = array( 0 => 'a', 1 => 'b', 2 => 'c', 4 => 'e', 5 => 'f
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'd',
4 => 'e',
5 => 'f',
);
现在,我想删除3
-unset($array[3])
-但结果如下:
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
4 => 'e',
5 => 'f',
);
但我希望结果如下所示:
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'e',
4 => 'f',
);
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'g',
4 => 'd',
5 => 'e',
6 => 'f'
);
$array = array_values($array);
类似于在3
-$array[3]=“g”
-我希望结果如下所示:
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'e',
4 => 'f',
);
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'g',
4 => 'd',
5 => 'e',
6 => 'f'
);
$array = array_values($array);
如何做到这一点?只需使用
array\u values()
来“重新设置”数组:
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'd',
4 => 'e',
5 => 'f',
);
unset($array[3]);
$array = array_values($array);
对于第二部分,只需将要添加新值的数组拆分到第一部分,然后将数组重新合并到一起
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'd',
4 => 'e',
5 => 'f',
);
$key = 3;
$first_part = array_slice($array, 0, $key);
$second_part = array_slice($array, $key);
$first_part[] = 'g';
$array = array_merge($first_part, $second_part);
如果您这样使用:
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'e',
4 => 'f',
);
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'g',
4 => 'd',
5 => 'e',
6 => 'f'
);
$array = array_values($array);
下面是代码:
$array = array(
0 => 'a',
1 => 'b',
2 => 'c',
3 => 'd',
4 => 'e',
5 => 'f',
);
unset($array[3]);
$array = array_values($array);
echo '<pre>';
print_r($array);
echo '</pre>';
我发布了一个答案,但后来我意识到你没有发布你尝试过的东西。看见