Question

我在我的数据库中创建了一个名为ccc_campaigns的表，我正在使用以下语句检索数据：

global $wpdb;

$campaign_list = $wpdb->get_results( 
                'SELECT * 
                 FROM ccc_campaigns 
                 ORDER BY id DESC');

这在我的本地和我的一台服务器上按预期工作，数据显示为：

foreach ($campaign_list as $campaign)

但是在应该使用此wordpress的服务器中，查询将返回空白。我无法理解或找不到该服务器失败的原因。

有什么想法吗？

非常感谢

Answer 1

确保数据库前缀相同。

编辑：我猜你正在构建某种插件，所以为了确保db前缀不会导致任何错误，请使用此函数。

import math
import maya.cmds as cmds
import maya.OpenMaya as OpenMaya
import maya.OpenMayaUI as OpenMayaUI

# Get active view.
view = OpenMayaUI.M3dView.active3dView()

# Get camera MFnDagPath.
dagCam = OpenMaya.MDagPath()
view.getCamera(dagCam)

# Build MFnCamera.
fnCam = OpenMaya.MFnCamera(dagCam)

# Get post matrix.
postMatrix = fnCam.postProjectionMatrix()

# Get current film roll value to calculate roll.
filmRollValue = cmds.getAttr("%s.filmRollValue" % dagCam.fullPathName())
deviceAspect = cmds.getAttr("defaultResolution.deviceAspectRatio")

# This is how rotation is calculate (Where does pivot come in?)
cz = math.cos(math.radians(filmRollValue))
sz = math.sin(math.radians(filmRollValue))

# Build matrix.
matList = [0.0] * 16
matList[0] = cz
matList[1] = -sz * deviceAspect 
matList[2] = 0.0
matList[3] = 0.0

matList[4] = sz / deviceAspect
matList[5] = cz
matList[6] = 0.0
matList[7] = 0.0

matList[8] = 0.0
matList[9] = 0.0
matList[10] = 1.0
matList[11] = 0.0

matList[12] = 0.0
matList[13] = 0.0
matList[14] = 0.0
matList[15] = 1.0

# Create MMatrix.
rollMMatrix = OpenMaya.MMatrix()
OpenMaya.MScriptUtil().createMatrixFromList(matList, rollMMatrix)

# Print values.
print("\nMy Film Roll:")
for x in xrange(0, 4):
    print(round(rollMMatrix(x, 0), 3),
          round(rollMMatrix(x, 1), 3),
          round(rollMMatrix(x, 2), 3),
          round(rollMMatrix(x, 3), 3))

print("\nPost Matrix from Maya:")
for x in xrange(0, 4):
    print(round(postMatrix(x, 0), 3),
          round(postMatrix(x, 1), 3),
          round(postMatrix(x, 2), 3),
          round(postMatrix(x, 3), 3))

$ wpdb-＆gt; get_results在服务器上不返回任何内容，但适用于本地 - Wordpress

1 个答案: