CODEWITHSUNDEEP
phparraysmultidimensional-arraymappingassociative-array
Kalui
Kalui

Reputation: 1

Join two flat, indexed arrays (by index) to form an indexed array of associative rows with hardcoded keys

Here are my two arrays:

Array (
    [0] => https://google.com/
    [1] => https://bing.com/
)
    
Array (
    [0] => Google
    [1] => Bing
)

Here's the output that I want in JSON:

[
    {
        "url": "https://google.com/",
        "name": "Google"
    },
    {
        "url": "https://bing.com/",
        "name": "Bing"
    }
]

I'm not able to get both the array in foreach loop and using json_encode to print them in JSON format.

Upvotes: -1

Views: 73

Answers (3)

mickmackusa
mickmackusa

Reputation: 47894

Even more elegant than axiac's snippet, you can make mapped calls of get_defined_vars() which means that you'll only need to mention the new keys by name in the anonymous function's signature.

Code: (Demo)

$urls = [
    'https://google.com/',
    'https://bing.com/'
];

$names = [
    'Google',
    'Bing'
];

echo json_encode(
         array_map(
             fn($url, $name) => get_defined_vars(),
             $urls,
             $names
         ),
         JSON_PRETTY_PRINT
     );

See an earlier page on the topic of converting parameters and their values to an associative array: How can I convert a PHP function's parameter list to an associative array?

Upvotes: 0

KodeFor.Me
KodeFor.Me

Reputation: 13511

Note that this solution requires both arrays (in my case $domains and $names) have the entries in the same order.

$domains = [
    'https://google.com/',
    'https://bing.com/'
];

$names = [
    'Google',
    'Bing'
];

$output = [];

// Iterate over the domains
foreach($domains as $key => $value){
    // And push into the $output array
    array_push(
        $output,
        // A new array that contains
        [
            // the current domain in the loop
            "url" => $value,
            // and the name, in the same index as the domain.
            "name" => $names[$key]
        ]
    );

}

// Finally echo the JSON output.
echo json_encode($output);

// The above line will output the following:
//[
//    {
//        "url": "https://google.com/",
//        "name": "Google"
//    },
//    {
//        "url": "https://bing.com/",
//        "name": "Bing"
//    }
//]

Upvotes: 1

axiac
axiac

Reputation: 72226

$urls = [
    'https://google.com/',
    'https://bing.com/'
];

$names = [
    'Google',
    'Bing'
];

$combined = array_map(
  fn($url, $name) => ['url' => $url, 'name' => $name],
  $urls,
  $names
);

echo(json_encode($combined));

Of course, the arrays need to have the same number of elements, in the same order.
See it in action.

Remark

The arrow function (fn($url, $name) => ['url' => $url 'name' => $name]) works only on PHP 7.4 and newer versions.
For older versions use the full syntax for anonymous functions:

function($url $name) { 
  return ['url' => $url, 'name' => $name];
}

Upvotes: 1

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