Online PHP editor | output for aLasP

@ 2024-01-08T20:14:07Z

<?php

$array = [
    [
        "08:30",
        "09:00",
        "09:30",
        "10:00",
        "14:30",
        "15:00",
        "15:30",
        "16:00",
        "16:30"
    ],
    [
        "13:30",
        "14:00",
        "14:30",
        "18:00",
        "18:30",
        "19:00"
    ]
];

function compactTimes(
    array $times,
    string $format = 'H:i',
    string $separation = "30 minutes"
): array {
    $result = [];
    $prev = null;
    foreach ($times as $time) {
        if (!$prev || $time !== date("H:i", strtotime("+$separation $prev"))) {
            unset($ref);
            $ref = [$time, $time];
            $result[] =& $ref;
        } else {
            $ref[1] = $time;
        }
        $prev = $time;
    }
    return $result;
}

var_export(
    array_map('compactTimes', $array)
);

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: array ( 0 => array ( 0 => array ( 0 => '08:30', 1 => '10:00', ), 1 => array ( 0 => '14:30', 1 => '16:30', ), ), 1 => array ( 0 => array ( 0 => '13:30', 1 => '14:30', ), 1 => array ( 0 => '18:00', 1 => '19:00', ), ), )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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