Question

我有以下数组：

array(2) {
  [0]=>
  array(2) {
    ["EAN"]=>
    string(13) "1234567890123"
    ["Price"]=>
    string(5) "99.00"
  }
  [1]=>
  array(2) {
    ["EAN"]=>
    string(13) "2234567890123"
    ["Price"]=>
    string(6) "199.00"
  }
}

我想：

1）使用EAN值

查找其中一个子阵列

2）并返回此特定EAN的相关价格

例如，函数 getPrice（＆＃39; 2234567890123＆＃39;）应返回 199.00 。

函数getPrice的代码应该是什么？

Answer 1

您可以使用此代码：

<?php
$array = array(
"0"=>
    array(
        "EAN"=>"1234567890123",
        "Price"=>"99.00"
    ),
"1"=>
    array (
        "EAN"=>"2234567890123",
        "Price"=>"199.00"
    )
);

$key = array_search('1234567890123', array_column($array, 'EAN'));
echo $array[$key]['Price'];
?>

Answer 2

/**
 * this generates a multi dimensional array of products
 * a multi dimensional array means arrays within arrays
 * so to access the inner array (EAN => '12345...')
 * we need to loop through the outer array (0 => [EAN => '12345...'])
 */
$products_array = [
    0 => [
        'EAN'   => '1234567890123',
        'Price' => '99.00',
    ],
    1 => [
        'EAN'   => '2234567890123',
        'Price' => '199.00',
    ],
];

/**
 * here is the function, it takes two arguments
 * the products array and the ean number you want to get the price of
 */
function getPrice($products_array, $ean)
{
    // we loop through the array using a foreach loop.
    foreach ($products_array as $key => $product) {
        // now product is just a single level array
        // we can access the ean by
        // typing $product['EAN'] and the Price by
        // typing $product['Price']
        if ($product['EAN'] === $ean) {
            return $product['Price'];
            // When there is a match the function returns the result and exits the loop
        }
    }
}

/**
 * here we are calling the function an giving it two things
 * 1 - the array we want to loop through and
 * 2 - the EAN number that we want to get the price of
 * don't forget to echo the output!
 */
echo getPrice($products_array, '2234567890123');

Answer 3

您可以使用此代码来实现所需的输出。

//getPrice method which accepts two parameters $products array and $ean number
function getPrice($products,$ean){
    //iterate $products array to get its elements
    foreach($products as $product){
      //if $procust arrays element EAN matches with $ean number we provide
      if($product['EAN'] == $ean){
      //than return its price
        return $product['Price'];
     }
  }
}


//products array
$products = array(
    '0'=>
     array(
       'EAN'=>'1234567890123',
       'Price'=>'99.00'
     ),
    '1'=>
    array (
      'EAN'=>'2234567890123',
      'Price'=>'199.00'
   )
 );

//EAN value which you need to pass and get its corresponding price
$ean = '2234567890123'; 

//call getPrice function and save the return output value in a $price variable which you can use anywhere
$price =  getPrice($products, $ean);

//print the value by echo $price to verify the required output.
echo $price;

在同一个子数组中获取值[PHP]

3 个答案: