Question

我想显示我的数组的值。但不是显示：

1509 1510 1511 显示 ArrayArrayArray 。这是什么意思？

include("db_PSIS.php");
$sql_dc = "SELECT Child, Datecode 
                    FROM traveller_merging15
                    WHERE Parent='" . $_REQUEST["txt_traveller_no"] . "'
                    ORDER BY Merge_ID ASC";
$res_dc = mysql_query($sql_dc);

$dcode1 = $row_dc['Datecode'];
$storeArray = array();

if (!$res_dc) {
    echo "No data fetched!";
} else {
    while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
        $storeArray[] = $dcode1;
        echo "{$storeArray} <br>";
    }
    //$str_dc=implode(",",$storeArray);
    //echo $str_dc;
}

Answer 1

在从数据库中获取数据之前，您将分配$row_dc['Datecode'];的值。你需要做fetch data inside while loop并回复它

$res_dc = mysql_query($sql_dc);
if (!$res_dc) {
    echo "No data fetched!";
} else {
    while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
        echo $row_dc['Datecode'];
    }  
 }

注意： - 不推荐使用mysql而是使用mysqli或PDO

Answer 2

   else {
        while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
        $storeArray[] =  $dcode1; 
        echo "{$storeArray} <br>";
        }

而不是尝试

   else {
        while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
        $storeArray[] =  $dcode1; 
        echo "{$storeArray[0]} <br>";
        }

Answer 3

试试这个，

else {
  while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
  $child =  $row_dc['Child']; 
  $Datecode =  $row_dc['Datecode']; 
  echo "$child <br> $Datecode";
}

如果您获得的行数超过1行，请使用for()循环

else {
  while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
  $count = count($row_dc);
  for($i = 0; $i < $count; $i ++){
      $child =  $row_dc[$i]['Child']; 
      $Datecode =  $row_dc[$i]['Datecode']; 
      echo "$child <br> $Datecode";
  }

}

Answer 4

-first 数组不使用 echo 打印值

-use print_r（$ array）打印键值对（打印数组）

你的解决方案是

2015-11-23 08:35:42.927 a.out[91256:5691654] 1
2015-11-23 08:35:42.930 a.out[91256:5691654] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't do regex matching on object (
).'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fff88e8ee32 __exceptionPreprocess + 178
    1   libobjc.A.dylib                     0x00007fff872284fa objc_exception_throw + 48
    2   Foundation                          0x00007fff8e2ac62f -[NSMatchingPredicateOperator performPrimitiveOperationUsingObject:andObject:] + 498
    3   Foundation                          0x00007fff8e212dd7 -[NSPredicateOperator performOperationUsingObject:andObject:] + 286
    4   Foundation                          0x00007fff8e212b8d -[NSComparisonPredicate evaluateWithObject:substitutionVariables:] + 313
    5   a.out                               0x0000000101a8decf main + 159
    6   libdyld.dylib                       0x00007fff86c4c5ad start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
[1]    91256 abort      ./a.out

注意:: - 使用单引号而不是双引号而不推荐使用mysql代替使用mysqli或PDO

列的Echo数组值不起作用

4 个答案: