jquery获取select2内部的数据属性，同时循环php

<select id="mySelect">
  <option value="1" data-attr1="value1" data-attr2="value2">Option 1</option>
  <option value="2" data-attr1="value3" data-attr2="value4">Option 2</option>
</select>

// 初始化select2插件
$("#mySelect").select2();

// 获取select2内部的数据属性
var option = $("#mySelect option:selected");
var attr1 = option.data("attr1");
var attr2 = option.data("attr2");

console.log(attr1); // 输出: value1 或 value3
console.log(attr2); // 输出: value2 或 value4

<?php
$array = array("apple", "banana", "cherry");

foreach ($array as $value) {
  echo $value . "<br>";
}
?>

apple
banana
cherry

<?php
$array = array("name" => "John", "age" => 30, "city" => "New York");

foreach ($array as $key => $value) {
  echo "Key: " . $key . ", Value: " . $value . "<br>";
}
?>

Key: name, Value: John
Key: age, Value: 30
Key: city, Value: New York