将 PHP 数组传递给 JavaScript for 循环

Question

我正在尝试将一些值从 PHP 数组传递到 JavaScript。

我的 php 变量 $contacts_info 具有以下值。

Array ( [0] => Array ( [contact_id] => 20 [type_id] => 2 [contact_type] => Representative Phone [contact_value] => 0987654321 )
        [1] => Array ( [contact_id] => 21 [type_id] => 4 [contact_type] => Shop Address [contact_value] => 0987654321 ) 
        [2] => Array ( [contact_id] => 22 [type_id] => 3 [contact_type] => Emergency Phone [contact_value] => 0987654321 ) 
        [3] => Array ( [contact_id] => 23 [type_id] => 2 [contact_type] => Representative Phone [contact_value] => 0987654321 ) 
        [4] => Array ( [contact_id] => 24 [type_id] => 3 [contact_type] => Emergency Phone [contact_value] => 0987654321 ) 
        [5] => Array ( [contact_id] => 25 [type_id] => 4 [contact_type] => Shop Address [contact_value] => 0987654321 ) ) 1

我正在尝试使用 JavaScript 在带有 for 循环的某些组合框中分配特定值。但是我这样做有问题。

Type: ParseError

Message: syntax error, unexpected '<', expecting ']'

我的JavaScript代码：

<script>
    var total_counter = "<?php echo $total_contact; ?>";
    var contact_info = "<?php json_encode($contacts_info); ?>";
    for (var i = 0; i <= total_counter - 1; i++) {
        let element = document.getElementById("contact_type_id_" + i);
        element.value = "<?php echo $contacts_info[<script>document.writeln(i);</script>]['type_id'] ?>";
    }
</script>

问题出在这部分<?php echo $contacts_info[<script>document.writeln(i);</script>]['type_id'] ?>。谁能帮我一下。

谢谢。

Answer 1

请按如下操作，

您需要删除包围 PHP 脚本的双引号，因为 "" 将其视为字符串。
<?php echo json_encode($contacts_info); ?> 丢失了 echo，因为 JSON 数组没有得到回应，因此它可以分配给 javascript 变量 contact_info
变量contact_info已经有了你的JSON数组，不需要再从PHP变量中获取它，

最终您的代码应该如下所示，

 <script>
        var total_counter = <?php echo $total_contact; ?>;
        var contact_info = <?php echo json_encode($contacts_info); ?>;
        for (var i = 0; i <= total_counter - 1; i++) {
            let element = document.getElementById("contact_type_id_" + i);
            element.value = contact_info[i].type_id ;
        }
    </script>

将 PHP 数组传递给 JavaScript for 循环

Passing PHP array into JavaScript for loop

javascript

php

model-view-controller

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