解析数据并使用php将值插入mysql数据库？

php代码来检查json数据是否来自android代码。

<?php
require "init.php";
if($_POST){
 print_r($_POST);
}else{
 echo "Nothing came from android code";
}
?>

作为响应，我正在获取json数据，如下所示：-

（[jsonarray] => [{“ custInfo”：“ Ujwal 9975022560”，“ rate”：“ 24000”，“ weight”：“ 21.00000”，“ desc”：“ GENTS ANGTHI 22k NO STONE”，“ makingAmt”：“ 200“，” sum_total“：” RS.156283.38“，” vat“：” RS.3064.38“，” itemTotal“：” 51073“，”条形码“：” BQSP78BB“，” net_rate“：” 24200“，” date“ ：“ 2015-12-02”，“发票编号”：“ 1”，“ bill_type”：“发票”}，{“ custInfo”：“ Ujwal 9975022560”，“ rate”：“ 24000”，“ weight”：“ 21.00000 “，” desc“：” GENTS ANGTHI 22k NO STONE“，” makingAmt“：” 200“，” sum_total“：” RS.156283.38“，” vat“：” RS。3064.38“，” itemTotal“：” 51073“，”条形码“：” BQSP78BB“，” net_rate“：” 24200“，” date“：” 2015-12-02“，” invoiceNo“：” 1“，” bill_type“ ：“发票”}，{“ custInfo”：“ Ujwal 9975022560”，“ rate”：“ 24000”，“ weight”：“ 21.00000”，“ desc”：“ GENTS ANGTHI 22k NO STONE”，“ makingAmt”：“ 200 “，” sum_total“：” RS.156283.38“，” vat“：” RS.3064.38“，” itemTotal“：” 51073“，”条形码“：” BQSP78BB“，” net_rate“：” 24200“，” date“： “ 2015-12-02”，“ invoiceNo”：“ 1”，“ bill_type”：“发票”}]）条码“：” BQSP78BB“，” net_rate“：” 24200“，” date“：” 2015-12-02“，” invoiceNo“：” 1“，” bill_type“：” Invoice“}，{” custInfo“：” Ujwal 9975022560“，” rate“：” 24000“，” weight“：” 21.00000“，” desc“：” GENTS ANGTHI 22k NO STONE“，” makingAmt“：” 200“，” sum_total“：” RS.156283.38“， “ vat”：“ RS.3064.38”，“ itemTotal”：“ 51073”，“条形码”：“ BQSP78BB”，“ net_rate”：“ 24200”，“ date”：“ 2015-12-02”，“ invoiceNo”： “ 1”，“ bill_type”：“发票”}]）条码“：” BQSP78BB“，” net_rate“：” 24200“，” date“：” 2015-12-02“，” invoiceNo“：” 1“，” bill_type“：” Invoice“}，{” custInfo“：” Ujwal 9975022560“，” rate“：” 24000“，” weight“：” 21.00000“，” desc“：” GENTS ANGTHI 22k NO STONE“，” makingAmt“：” 200“，” sum_total“：” RS.156283.38“， “ vat”：“ RS.3064.38”，“ itemTotal”：“ 51073”，“条形码”：“ BQSP78BB”，“ net_rate”：“ 24200”，“ date”：“ 2015-12-02”，“ invoiceNo”： “ 1”，“ bill_type”：“发票”}]）invoiceNo“：” 1“，” bill_type“：” Invoice“}，{” custInfo“：” Ujwal 9975022560“，” rate“：” 24000“，” weight“：” 21.00000“，” desc“：” GENTS ANGTHI 22k NO STONE“，” makingAmt“：” 200“，” sum_total“：” RS.156283.38“，” vat“：” RS.3064.38“，” itemTotal“：” 51073“，”条形码“：” BQSP78BB“，” net_rate “：” 24200“，” date“：” 2015-12-02“，” invoiceNo“：” 1“，” bill_type“：” Invoice“}]）invoiceNo“：” 1“，” bill_type“：” Invoice“}，{” custInfo“：” Ujwal 9975022560“，” rate“：” 24000“，” weight“：” 21.00000“，” desc“：” GENTS ANGTHI 22k NO STONE“，” makingAmt“：” 200“，” sum_total“：” RS.156283.38“，” vat“：” RS.3064.38“，” itemTotal“：” 51073“，”条形码“：” BQSP78BB“，” net_rate “：” 24200“，” date“：” 2015-12-02“，” invoiceNo“：” 1“，” bill_type“：” Invoice“}]）GENTS ANGTHI 22k NO STONE“，” makingAmt“：” 200“，” sum_total“：” RS.156283.38“，” vat“：” RS.3064.38“，” itemTotal“：” 51073“，”条形码“：” BQSP78BB“ ，“ net_rate”：“ 24200”，“ date”：“ 2015-12-02”，“ invoiceNo”：“ 1”，“ bill_type”：“ Invoice”}]））GENTS ANGTHI 22k NO STONE“，” makingAmt“：” 200“，” sum_total“：” RS.156283.38“，” vat“：” RS.3064.38“，” itemTotal“：” 51073“，”条形码“：” BQSP78BB“ ，“ net_rate”：“ 24200”，“ date”：“ 2015-12-02”，“ invoiceNo”：“ 1”，“ bill_type”：“ Invoice”}]））

我想做的就是解析此响应并将数据插入到mysql数据库中。我认为是这样的。

foreach ( $data as $inv ) {
    $custInfo = $inv->custInfo;
    $rate =     $inv->rate;
    $weight=    $inv->weight;
    $desc=      $inv->desc;
    $makingAmt= $inv->makingAmt;
    $vat=       $inv->vat;
    $itemTotal= $inv->itemTotal;
    $sum_total= $inv->sum_total;
    $barcode=   $inv->barcode;
    $net_rate=  $inv->net_rate;
    $date=      $inv->date;
    $invoiceNo= $inv->invoiceNo;
    $bill_type= $inv->bill_type;
    $sql = "INSERT INTO selected_items 
             (custInfo, invoiceNo, barcode, desc, 
              weight, rate, makingAmt,net_rate,
              itemTotal,vat,sum_total,bill_type,date) 
            VALUES
             ('$custInfo','$invoiceNo','$barcode','$desc',
              '$weight','$rate','$makingAmt','$net_rate',
              '$itemTotal','$vat','$sum_total','$bill_type','$date')";
    $res = mysqli_query($sql,$con);

我是php的新手，所以尝试了json_decode，但它返回一个空字符串作为响应。如何解析并插入custInfo, invoiceNo, barcode, desc,weight, rate, makingAmt,net_rate,itemTotal,vat,sum_total,bill_type,date表格selected_items.

谢谢你:)