Question

-----问题解决了，请看下面的更新2 ---- 我把所有MySQL查询结果都放到了一个2D数组中：

$suppDescription=mysql_query($query);
$rows = mysql_num_rows($results);
$allSupplierInfo=array();

for($i=0; $i<$rows; $i++){
    $allSupplierInfo[]=mysql_fetch_row($suppDescription);
}

但现在我无法访问$ allSuppliersInfo字段。

 echo $allSupplierInfo[1][1]; // prints out 'Array'
 echo $allSupplierInfo[1]['id'];  //prints out nothing

我做错了什么？

-------更新-----

print_r（$ allSupplierInfo）打印以下内容，因此看起来循环无法正常工作：

Array (
    [0] => Array ( [0] => Array ( [0] =>ID_A[1] => name_A [2] => Address_A[3] => Link_A ) ) 
    [1] => Array ( [0] => Array ( [0] =>ID_A[1] => name_A [2] => Address_A[3] => Link_A ) [1] => Array ( [0] =>ID_B[1] => Name_B [2] => Address_B [3] => Link_B ) ) 
    [2] => Array ( [0] => Array ( [0] =>ID_A[1] => name_A [2] => Address_A[3] => Link_A ) [1] => Array ( [0] =>ID_B[1] => Name_B [2] => Address_B [3] => Link_B ) [2] => Array ( [0] =>ID_C[1] => Name_C [2] => Address_C [3] => Link_C ) ) 
    [3] => Array ( [0] => Array ( [0] =>ID_A[1] => name_A [2] => Address_A[3] => Link_A ) [1] => Array ( [0] =>ID_B[1] => Name_B [2] => Address_B [3] => Link_B ) [2] => Array ( [0] =>ID_C[1] => Name_C [2] => Address_C [3] => Link_C ) [3] => Array ( [0] =>ID_D[1] => Name_D [2] => Address_D [3] => Link_D ) ) 
    [4] => Array ( [0] => Array ( [0] =>ID_A[1] => name_A [2] => Address_A[3] => Link_A ) [1] => Array ( [0] =>ID_B[1] => Name_B [2] => Address_B [3] => Link_B ) [2] => Array ( [0] =>ID_C[1] => Name_C [2] => Address_C [3] => Link_C ) [3] => Array ( [0] =>ID_D[1] => Name_D [2] =>     Address_D [3] => Link_D ) [4] => Array ( [0] =>ID_E[1] => Name_E [2] => Address_E [3] => Address_E ) ) )

------更新2 ----- 正如RiggsFolly所建议的，使用while循环解决了问题，我可以按照我最初的需要访问这些字段。我仍然不明白为什么我使用的for循环没有像我想的那样循环 - 任何解释都会非常感激。

Answer 1

我认为你对你的mysql结果处理感到困惑，你在检查返回的行数时使用$result但它应该是$suppDescription。

这意味着您的for循环将无法运行，因为您将获得0或probbaly FALSE作为对mysql_num_rows($suppDescription);的回复

$suppDescription=mysql_query($query);
$rows = mysql_num_rows($suppDescription);
$allSupplierInfo=array();

for($i=0; $i<$rows; $i++){
    $allSupplierInfo[]=mysql_fetch_row($suppDescription);
}

使用while loop也可以轻松完成，然后您只需处理返回的内容，而无需费心获取行数。

$suppDescription=mysql_query($query);

$allSupplierInfo=array();

while ( $rows = mysql_fetch_row($suppDescription) ) {
    $allSupplierInfo[]=mysql_fetch_row($suppDescription);
}

如何在PHP中访问2D数组字段

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