如何使用PHP用json資料填充<select>下拉選單

我正在嘗試使用 php 和 json 檔案填充下拉串列。它應該填充所有“名稱”值。如果我使用：

$printers=file_get_contents ("config/printers.json");
$test= json_decode($printers,true);
foreach($test as $test) {
    echo $test['Name'];
}

它將顯示正確的值，因此我知道 json 是正確的并使用正確的呼叫來獲取資料。（更新）如果我按照建議使用它，我會收到一個錯誤“致命錯誤，未捕獲的型別錯誤：無法訪問字串中型別字串的偏移量：”并指向回顯呼叫。

<select id="printer" name="printer">
<option value="none">Select Printer</option>
<?php 
foreach($test as $t) {
   echo '<option value="'. $t['Name'].  '">'. $t['Name'].'</option>';      
  }
?>
</select>

但是，如果我將其更改為（這可能是錯誤的）：

<select id="printer" name="printer">
        <option value="none">Select Printer</option>
        <?php 
          foreach($test as $t) {
            echo '<option value="'. $test['Name'].  '">'. $test['Name'].'</option>';      
          }
        ?>
    </select>

錯誤消失，下拉串列將被填充，但只有 5 個條目。（陣列中有 20 個元素）并且所有 5 個條目都是陣列中的最后一項。 我想我在正確轉義引號時遺漏了一些東西？這部分似乎解決了？

json檔案是：

[
    {
      "Name": "CR-10",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-10 V2",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-10 Mini",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-10S",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-10S4",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-10S5",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""     
    },
    {
      "Name": "CR-10S Pro",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-10S Pro V2",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-10 Max",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "CR-20",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 3",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 3X",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 3 V2",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 3 Pro",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 3 Pro/BLV Mod",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 5",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 5 Pro",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Ender 5 Plus",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Voxelab Aquila",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    },
    {
      "Name": "Anet ET4/ET5",
      "GantryStyle": 1,
      "comment": "",
      "image": "cr-10.jpg",
      "option1": ""      
    }
  ]

uj5u.com熱心網友回復：

您可以一起使用'和"：

  <select id="printer" name="printer">
        <option value="none">Select Printer</option>
        <?php 
          foreach($test as $t) {
            echo '<option value="'. $t['Name'].  '">'. $t['Name'].'</option>';      
          }
        ?>
    </select>

標籤：php html json

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