如何获取数组的值

Question

我有一个数组，我想得到我认为的数组数组的值。但我无法获得所有数组值的值。所以请告诉我哪种方式可以获得所有值。

print_r($demo);

Array ( [] => Array ( [0] => research , monitoring , benchmarking )
        [1] => Array ( [0] => online marketing software )
        [2] => Array ( [0] => online exposure )
        [3] => Array ( [0] => research , monitoring , benchmarking )
        [4] => Array ( [0] => research , monitoring , benchmarking )
        [5] => Array ( [0] => Internet Marketing platform providing research , monitoring , benchmarking & ; recommendations - )
        [6] => Array ( [0] => research monitoring benchmarking )
        [7] => Array ( [0] => online marketing )
        [8] => Array ( [0] => online exposure )
        [9] => Array ( [0] => Online Marketing )
        [10] => Array ( [0] => online exposure )
        [11] => Array ( [0] => marketing software )
        [12] => Array ( [0] => Internet Marketing platform providing research monitoring benchmarking amp recommendations )
        [13] => Array ( [0] => Learn how )
        [14] => Array ( [0] => rough seas )
        [15] => Array ( [0] => tools empowering you )
        [16] => Array ( [0] => complex take control )
        [17] => Array ( [0] => tools you need )
        [18] => Array ( [0] => achieve results )
        [19] => Array ( [0] => criticone online intelligence )
        [20] => Array ( [0] => gain knowledge amp drive business results )
        [21] => Array ( [0] => 60 seconds View )
        [22] => Array ( [0] => plans Questions 1300 664 )
        [23] => Array ( [0] => 1 website )
        [24] => Array ( [0] => numerous microsites )
        [25] => Array ( [0] => Author images )
        [26] => Array ( [0] => author images )
        [27] => Array ( [0] => 1300 664 )
        [28] => Array ( [0] => Learn how )
        [29] => Array ( [0] => rough seas )
        [30] => Array ( [0] => tools empowering you )
        [31] => Array ( [0] => complex , take control )
        [32] => Array ( [0] => tools you need )
        [33] => Array ( [0] => achieve results )
        [34] => Array ( [0] => ..,Leverage criticone online intelligence )
        [35] => Array ( [0] => gain knowledge & ; drive business results )
        [36] => Array ( [0] => 60 seconds View )
        [37] => Array ( [0] => plans Questions 1300 664 )
        [38] => Array ( [0] => 550,Why 1 )
        [39] => Array ( [0] => numerous microsites )
        [40] => Array ( [0] => Author images ) )

criticone

Answer 1

您可以“直接”访问它：

echo $demo[2][0]; // "online exposure"

或者，如果您需要遍历所有或几个元素，请使用foreach循环：

foreach ($demo as $key => $subarr)
{
    if ($key > 5)
    {
        echo $subarr[0];
    }
}

从数组索引6向上打印所有值。

注意：这些只是（非常愚蠢的）示例，用于说明如何处理多维数组。还有更多的方法来处理它们，这些只是（对我而言）两个最自然的方式。希望它有所帮助。