如何在php中获取上一个和下一个数组值？

Question

So I am using a RapidAPI's API where I am getting this below array after json_encode() it -

Array
(
    [00:00:00] => Array
        (
            [name] => Arr Name 1
            [other-details] => Arr Desscription 1
            [type] => Arr Type 1
        )

    [00:30:00] => Array
        (
            [name] => Arr Name 2
            [other-details] => Arr Desscription 2
            [type] => Arr Type 2
        )
)

Now that you have seen the structure I am getting from now on please notice that I am getting only the starting time Ie [00:00:00] and not the ending time ie it should have been [00:30:00] the end time.

But using

foreach ($arr as $key => $value) { 
}

I am getting

• [00:00:00]
• [00:30:00]

respectively as you can expect in foreach I have tried using foreach inside foreach using array_slice but failed.

So what I want is

• Start Time - End Time
• [00:00:00] [00:30:00]
• [00:30:00] .....

Answer 1

You might take and loop the keys from the array using array_keys.

In the loop, print the starting time, and only print the ending time if it exist by checking if the key for the next value in the array exists.

$a = [
    '00:00:00' => [
        'name' => 'Arr Name 1',
        'other-details' => 'Arr Desscription 1',
        'type' => 'Arr Type 1'
    ],
    '00:00:30' => [
        'name' => 'Arr Name 2',
        'other-details' => 'Arr Desscription 2',
        'type' => 'Arr Type 2'
    ],
    '00:01:00' => [
        'name' => 'Arr Name 3',
        'other-details' => 'Arr Desscription 3',
        'type' => 'Arr Type 3'
    ],
    '00:01:30' => [
        'name' => 'Arr Name 4',
        'other-details' => 'Arr Desscription 4',
        'type' => 'Arr Type 4'
    ]
];

$keys = array_keys($a);
for ($i = 0; $i < count($keys); $i++) {
    $result = $keys[$i];
    if (array_key_exists($i+1, $keys)) {
        $result .= " " . $keys[$i + 1];
    }
    echo $result . PHP_EOL;
}

Output

00:00:00 00:00:30
00:00:30 00:01:00
00:01:00 00:01:30
00:01:30

See a PHP demo

Answer 2

I hope this is what you're looking for:

<?php

// sample data
$data = [
    
    "00:00:00" => [
        "name" => "Test name",
        "details" => "Test details",
        "type" => "Test type"
    ],
    
    "00:30:00" => [
        "name" => "Test name",
        "details" => "Test details",
        "type" => "Test type"
    ],
    
    "00:60:00" => [
        "name" => "Test name",
        "details" => "Test details",
        "type" => "Test type"
    ]
    
];

$timeslots = [];

foreach(array_chunk($data, 2, TRUE) as $key => $value) {
    
    $timeslots[] = array_keys($value);
}

print_r($timeslots);

?>

Output:

Array
(
    [0] => Array
        (
            [0] => 00:00:00
            [1] => 00:30:00
        )

    [1] => Array
        (
            [0] => 00:60:00
        )

)