我有一个代码来根据用户输入序列从MySQL数据库中读取数据，我希望将所有结果存储到一个多维数组中，以便在以后的部分中使用。但是，代码只存储最后一个数组，但不存储每个数组。我的代码有什么问题吗？
for($i = 0 ; $i < sizeof($up_gene) ; $i ++){
$geneName = $up_gene[$i];
$mysql = "SELECT * FROM clmap WHERE GeneID = '$geneName'";
$result = mysqli_query($con, $mysql);
$row = mysqli_fetch_array($result , MYSQLI_NUM);
$up_temp[$i] = $row;
}
我的数据库中的数据如下：
GeneID | 17_AAG | HUTYG | A_770897 | AICAR | ...
-------------------------------------------------
FR2L1 | 1390 | 6746 | 4316 | 1051 | ...
ALDH1A1 | 288 | 7622 | 12 | 98867 | ...
# other rows is similar to above #
如果我输入GeneID列表，例如FR2L1，ALDH1A1，ABAT，AAAS，
输出数组只有最后一个数组的值，在这种情况下为$up_temp[3]，其余部分从$up_temp[0]到$up_temp[2]为空。数据库中有数百万行，但我只需要选择用户的输入GeneID。
print_r($up_temp[3])
数组（[0] =＆gt; F2RL1 [1] =＆gt; 1390 [2] =＆gt; 6764 [3] =＆gt; 4316 [4] =＆gt; 1051 [5] =＆gt; 11654 [6] =＆gt; 1871 [7] =＆gt; 8863 [8] =＆gt; 1245 [9] =＆gt; 6438 [10] =＆gt; 12693 [11] =＆gt; 7525 [12] =＆gt; 10372 [13] =＆gt; 10625 [14] =＆gt; 7114 [15] =＆gt; 12180 [16] =＆gt; 2760 [17] =＆gt; 375 [18] =＆gt; 12525 [19] =＆gt; 2828 [20] =＆gt; 6938 [21] =＆gt; 5926 [22] =＆gt; 8906 [23] =＆gt; 9372 [24] =＆gt; 6341 [25] =＆gt; 1427 [26] =＆GT; 3858 [27] =＆gt; 1194 [28] =＆gt; 3510 [29] =＆gt; 2462 [30] =＆gt; 3301 [31] =＆gt; 1909年[32] =＆gt; 3816 [33] =＆gt; 8901 [34] =＆gt; 5361 [35] =＆gt; 2711 [36] =＆gt; 5294 [37] =＆gt; 6138 [38] =＆gt; 10272 [39] =＆gt; 9893 [40] =＆gt; 1205 [41] =＆gt; 10868 [42] =＆gt; 3016 [43] =＆gt; 1601 [44] =＆gt; 315 [45] =＆gt; 2577 [46] =＆gt; 6226 [47] =＆GT; 274 [48] =＆gt; 1573 [49] =＆gt; 2681 [50] =＆gt; 1447 [51] =＆gt; 5375 [52] =＆gt; 1381 [53] =＆gt; 6405 [54] =＆gt; 11033 [55] =＆gt; 7915 [56] =＆gt; 8293 [57] =＆gt; 3446 [58] =＆gt; 231 [59] =＆gt; 9772 [60] =＆gt; 4684 [61] =＆gt; 432 [62] =＆gt; 1815 [63] =＆gt; 10904 [64] =＆gt; 41 [65] =＆gt; 4647 [66] =＆gt; 3238 [67] =＆gt; 5488 [68] =＆gt; 2340 [69] =＆gt; 4925 [70] =＆gt; 2513 [71] =＆gt; 911 [72] =＆gt; 3736 [73] =＆gt; 6593 [74] =＆GT; 1441 [75] =＆gt; 3098 [76] =＆gt; 2976 [77] =＆gt; 4665 [78] =＆gt; 8056 [79] =＆gt; 10717 [80] =＆gt; 53 [81] =＆gt; 4159 [82] =＆gt; 9920 [83] =＆gt; 5673 [84] =＆gt; 12146 [85] =＆gt; 2072 [86] =＆gt; 4753 [87] =＆gt; 9678 [88] =＆gt; 6811 [89] =＆gt; 7519 [90] =＆GT; 10708 [91] =＆gt; 1215 [92] =＆gt; 6837 [93] =＆gt; 6817 [94] =＆gt; 6085 [95] =＆gt; 7160 [96] =＆gt; 9059 [97] =＆gt; 7729 [98] =＆gt; 5330 [99] =＆gt; 179 [100] =＆gt; 1020 [101] =＆gt; 8672 [102] =＆gt; 9971 [103] =＆gt; 7189 [104] =＆gt; 2307 [105] =＆gt; 2849 [106] =＆gt; 4897 [107] =＆gt; 1229 [108] =＆gt; 11588 [109] =＆gt; 1923 [110] =＆gt; 12715 [111] =＆gt; 2099 [112] =＆gt; 12035 [113] =＆gt; 4062 [114] =＆gt; 1416 [115] =＆GT; 547 [116] =＆gt; 1915 [117] =＆gt; 7689 [118] =＆gt; 6641 [119] =＆gt; 11312 [120] =＆gt; 7079 [121] =＆gt; 8564 [122] =＆gt; 2156 [123] =＆gt; 539 [124] =＆gt; 4850 [125] =＆gt; 10205 [126] =＆gt; 1756 [127] =＆gt; 1266 [128] =＆gt; 3468 [129] =＆gt; 7341 [130] =＆gt; 8809 [131] =＆gt; 11949 [132] =＆gt; 10126 [133] =＆gt; 3436 [134] =＆gt; 8066 [135] =＆gt; 3116 [136] =＆gt; 4155 [137] =＆gt; 1637 [138] =＆gt; 1717 [139] =＆gt; 2045 [140] =＆gt; 7511）
print_r($up_temp[0])到print_r($up_temp[2])的输出：空
更新：事实证明我的$up_gene变量未正确输入，只是意识到每个变量后面都有空间导致MySQL查询返回前几个变量为空。上面的代码按预期工作。
答案 0 :(得分：2)
尝试这样做：
$up_temp = array();
$sql = "select * from clmap where GeneID in(".implode(",",$up_gene).");";
$result = mysqli_query($con, $sql);
while($row = mysqli_fetch_array($result , MYSQLI_NUM)){
$up_temp[] = $row;
}
内爆数组$up_gene，以便所有ID都是逗号分隔的字符串。然后使用mysql in来获取具有其中一个id的所有行。至少运行一个while循环并将$ row数组存储到多维数组$ up_temp