Question

嗨我有一个看起来像这样的数组

数组（[0] =＆gt; T [1] =＆gt; T [2] =＆gt; T [3] =＆gt; T [4] =＆gt; T [5] =＆gt; T [6] =＆gt; T [7] =＆gt; T [8] =＆gt; T [9] =＆gt; T [10] =＆gt; T [11] =＆gt; T [12] =＆gt; T [13] = ＆gt; T [14] =＆gt; T [15] =＆gt; T [16] =＆gt; T [17] =＆gt; T [18] =＆gt; T [19] =＆gt; T [20] =＆gt; T [21] =＆gt; T [22] =＆gt; T [23] =＆gt; T [24] =＆gt; T [25] =＆gt; T [26] =＆gt; T [27] =＆gt; T [28] =＆gt; T [29] =＆gt; T [30] =＆gt; T [31] =＆gt; T [32] =＆gt; T [33] =＆gt; T [34] =＆gt; T [35] =＆gt; T [36] =＆gt; T [37] =＆gt; T [38] =＆gt; T [39] =＆gt; T [40] =＆gt; T [41] =＆gt; T [ 42] =＆gt; T [43] =＆gt; T [44] =＆gt; T [45] =＆gt; T [46] =＆gt; T [47] =＆gt; T [48] =＆gt; T [49 ] =＆gt; T [50] =＆gt; T [51] =＆gt; T [52] =＆gt; T [53] =＆gt; T [54] =＆gt; T [55] =＆gt; T [56] =＆gt; T [57] =＆gt; T [58] =＆gt; T [59] =＆gt; T [60] =＆gt; T [61] =＆gt; T [62] =＆gt; T [63] = ＆gt; T [64] =＆gt; T [65] =＆gt; T [66] =＆gt; T [67] =＆gt; T [68] =＆gt; T [69] =＆gt; T [70] =＆gt; T [71] =＆gt; T [72] =＆gt; 0 [73] =＆gt; 0 [74] =＆gt; 0 [75] =＆gt; 0 [76] =＆gt; 0 [77] =＆gt; 0 [78] =＆gt; 0 [79] =＆gt; 0 [80] =＆gt; 0 [81] =＆gt; 0 [82] =＆gt; 0 [83] =＆gt; 0 [84] =＆gt; 0 [85] =＆gt; 0 [86] =＆gt; 0 [87] =＆gt; 0 [88] =＆gt; 0 [89] =＆gt; 0 [90] =＆gt; 0 [91] =＆gt; 0 [92] =＆gt; 0 [93] =＆gt; 0 [94] =＆gt; 0 [95] =＆gt; 0 [96] =＆gt; 0 [97] =＆gt; 0 [98] =＆gt; 0 [99] =＆gt; 0）

我需要做的是将键[0] - [49]，[50] - [99]和[100] - [149]分组为三个字符串变量，以便将它们插入到数据库字段中answer1-50'，'answers51-100'和'answers101-150。我有点迷失在这一个，因为我仍然有点像一个PHP新手。我如何将这个数组分成三组作为字符串？

Answer 1

虽然不是很好的做法，但您发布的问题的答案是：

list($group1, $group2, $group3) = array_map("implode", array_chunk($arr, 50));

（假设你总是有150个答案。如果你没有，跳过列表，你会得到一组结果$ groups [0]，$ groups [1]，$ groups [2]）

Answer 2

我不确定你为什么要这样做，但这应该可以解决问题。

//assuming content in $myarray
$newarr = array();
for($i = 0; $i < count($myarray); $i++ {
    $j = floor($i / 50);
    if($j == $i / 50) {
        $newarr[$j] = "";
    }
    $newarr[$j] += (string)$myarray[$i]; 
}

$ newarr的每个元素都应该是一个包含50个答案的字符串。

Answer 3

你可以简单地在循环下编写它并将值连接成一个字符串。

for($i = 0; $i < count($yourarray); $i++) {
if(i>=0 && $i<50)
{
    $str1=$str1.$yourarray[i];
}
else if(i>=50 && $i<100)
{
    $str2=$str2.$yourarray[i];
}
else if(i>=100 && $i<150)
{
    $str3=$str3.$yourarray[i];
}}

PHP数组键到一个字符串

3 个答案: