PHP内爆数组问题

新手技术难度在这里。 希望我能解释清楚。 在我的数据库中，我有snFreq、snFreq2、snFreqIV、snFreqTube、snFreqTrach、snFreqCath、snfreqward和snFreqOstomy。 我编写了一个isset来检查每一列是否存在数据，然后用预设文本创建一个变量。 在所有检查点之后，我想将其包含在一个短语中，但不想包含“0”数据。出于某种原因，我的输出仍然显示多个逗号和空白数据。 以下是一个示例输出： SN频率/持续时间：每天一次X 60天+2次PRN检查，检查静脉并发症、管饲并发症，<=加逗号？ 在my DB中： snFreq=QD X 60天，snFreq2=1，snFreqIV=1，snFreqTube=1，其余为空

    if(isset($rowPlanOfCare['snFreq'])){$snFreq = "SN FREQUENCY/DURATION: " . $rowPlanOfCare['snFreq'];}
    if(isset($rowPlanOfCare['snFreq2'])){$snFreq2 = " + 2 PRN VISITS FOR ";}
    if(isset($rowPlanOfCare['snFreqIV'])){$snFreqIV = "IV COMPLICATIONS";}
    if(isset($rowPlanOfCare['snFreqTube'])){$snFreqTube = "TUBE FEEDING COMPLICATIONS";}
    if(isset($rowPlanOfCare['snFreqTrach'])){$snFreqTrach = "TRACHEOSTOMY CARE COMPLICATIONS";}
    if(isset($rowPlanOfCare['snFreqCath'])){$snFreqCath = "CATHETER CARE COMPLICATIONS";}
    if(isset($rowPlanOfCare['snFreqWound'])){$snFreqWound = "WOUND CARE COMPLICATIONS";}
    if(isset($rowPlanOfCare['snFreqOstomy'])){$snFreqOstomy = "OSTOMY CARE COMPLICATIONS";}
    $snFrequency = $snFreq . $snFreq2 . implode(", ",array($snFreqIV, $snFreqTube, $snFreqTrach, $snFreqCath, $snFreqWound, $snFreqOstomy)) . "\n \n ";

最终输出应仅显示：SN频率/持续时间：QD X 60天+2次静脉并发症PRN就诊，管饲并发症<==无其他逗号

我希望你能帮我解决这个问题。提前感谢！：）

试试这个：

 $snFrequency = $snFreq . $snFreq2 . implode(", ",array_filter(array($snFreqIV, $snFreqTube, $snFreqTrach, $snFreqCath, $snFreqWound, $snFreqOstomy))) . "\n \n ";

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isset与empty（）不同（`if（isset（$rowPlanOfCare['snFreqOstomy']）和&$rowPlanOfCare['snFreqOstomy']！=“”）