six / solution 6.1

<?php

$fields = ["name", "nickname", "pronouns", "birthdate", "address", "email", "phone", "url", "socials", "created", "updated", "notes"];
$book = [];

// Sharon Wu
$book["Sharon Wu"] = [
    "nickname" => ["woozie", "shar"],
    "pronouns" => "she/they",
    "birthdate" => 654359400,
    "address" => [
        "home" => "126 Main Street\nPhiladelphia, PA 19127\nUnited States of America",
    ],
    "email" => ["work" => "[email protected]"],
    "phone" => ["work" => "+1.234.567.8901"],
    "url" => [
        "work" => "https://php.org/sharon.wu",
    ],
    "socials" => [
        "instagram" => "@php.sharon.wu",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Lori Kim
$book["Lori Kim"] = [
    "nickname" => ["lor", "pookie"],
    "pronouns" => "she/her",
    "birthdate" => 774196200,
    "address" => [],
    "email" => ["work" => "[email protected]"],
    "phone" => ["work" => "+1.234.567.8901"],
    "url" => [
        "work" => "https://php.org/lori.kim",
    ],
    "socials" => [
        "instagram" => "@php.lori.kim",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Disha Wish
$book["Disha Wish"] = [
    "nickname" => ["star"],
    "pronouns" => "she/they",
    "birthdate" => 866471400,
    "address" => [],
    "email" => [
        "work" => "[email protected]",
        "home" => "[email protected]",
    ],
    "phone" => ["work" => "+1.234.567.8901"],
    "url" => [
        "work" => "https://php.org/disha.wish",
    ],
    "socials" => [
        "instagram" => "@php.disha.wish",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Emily Barnes
$book["Emily Barnes"] = [
    "nickname" => ["adoorable", "stable"],
    "pronouns" => "they/them",
    "birthdate" => 1075476600,
    "address" => [
        "home" => "6200 University Boulevard\nVancouver, BC V6T 1Z4\nCanada",
    ],
    "email" => [
        "work" => "[email protected]",
        "home" => "[email protected]",
    ],
    "phone" => ["work" => "+1.234.567.8901"],
    "url" => [
        "work" => "https://php.org/emily.barnes",
    ],
    "socials" => [
        "instagram" => "@php.emily.barnes",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Evelyn Silk
$book["Evelyn Silk"] = [
    "nickname" => ["smoothie", "eve"],
    "pronouns" => "they/she",
    "birthdate" => 630516600,
    "address" => [
        "home" => "1 rue Victor Cousin\n75005 Paris\nFrance",
    ],
    "email" => [
        "work" => "[email protected]",
        "home" => "[email protected]",
    ],
    "phone" => ["work" => "+33.234.567.8901"],
    "url" => [
        "work" => "https://php.org/evelyn.silk",
    ],
    "socials" => [
        "instagram" => "@php.evelyn.silk",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Ava Machs
$book["Ava Machs"] = [
    "nickname" => ["pads"],
    "pronouns" => "she/they",
    "birthdate" => 600535800,
    "address" => [
        "home" => "99 Shangda Road\nBaoshan District, Shanghai 200444\nChina",
    ],
    "email" => [
        "work" => "[email protected]",
        "home" => "[email protected]",
    ],
    "phone" => ["work" => "+86.234.567.8901"],
    "url" => [
        "work" => "https://php.org/ava.machs",
    ],
    "socials" => [
        "instagram" => "@php.ava.machs",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Harper Wren
$book["Harper Wren"] = [
    "nickname" => ["wrinkle", "birdie"],
    "pronouns" => "they/them",
    "birthdate" => 946567800,
    "address" => [
        "home" => "80 Wellington Street\nOttawa, ON K1A 0A2\nCanada",
    ],
    "email" => [
        "work" => "[email protected]",
        "home" => "[email protected]",
    ],
    "phone" => ["work" => "+1.234.567.8901"],
    "url" => [
        "work" => "https://php.org/harper.wren",
    ],
    "socials" => [
        "instagram" => "@php.harper.wren",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Mia Lynx
$book["Mia Lynx"] = [
    "nickname" => ["furry"],
    "pronouns" => "they/it",
    "birthdate" => 1005147000,
    "address" => [
        "home" => "Nueva Tajamar 481\nTorre Norte, Las Condes, Santiago\nChile",
    ],
    "email" => [
        "work" => "[email protected]",
        "home" => "[email protected]",
    ],
    "phone" => ["work" => "+56.234.567.8901"],
    "url" => [
        "work" => "https://php.org/mia.lynx",
    ],
    "socials" => [
        "instagram" => "@php.mia.lynx",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Sophie Koh
$book["Sophie Koh"] = [
    "nickname" => ["kodiak"],
    "pronouns" => "she/they",
    "birthdate" => 1049470200,
    "address" => [
        "home" => "1 Zmora Street\nJerusalem, 9515701\nIsrael",
    ],
    "email" => ["work" => "[email protected]"],
    "phone" => ["work" => "+972.234.567.8901"],
    "url" => [
        "work" => "https://php.org/sophie.koh",
    ],
    "socials" => [
        "instagram" => "@php.sophie.koh",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// Isla White
$book["Isla White"] = [
    "nickname" => ["scottie", "black"],
    "pronouns" => "she/her",
    "birthdate" => 1062426600,
    "address" => [],
    "email" => ["work" => "[email protected]"],
    "phone" => ["work" => "+1.234.567.8901"],
    "url" => [
        "work" => "https://php.org/isla.white",
    ],
    "socials" => [
        "instagram" => "@php.isla.white",
    ],
    "created" => 3155772600,
    "updated" => 3155772600,
    "notes" => "",
];

// clean entries

foreach ($book as &$entry) {
    foreach ($fields as $field) {
        if (isset($entry[$field])) {
            $i = &$entry[$field];
            if ($field == "name" || $field == "pronouns" || $field == "notes") {
                $i = trim($i);
                $field == "name" && ($i = mb_convert_case($i, MB_CASE_TITLE));
                $field == "pronouns" && ($i = mb_convert_case($i, MB_CASE_LOWER));
            }
            if ($field == "nickname" || $field == "address" || $field == "email" || $field == "phone" || $field == "url" || $field == "socials") {
                $i = array_change_key_case($i, CASE_LOWER);
                foreach ($i as &$v) {
                    $v = trim($v);
                }
                if ($field == "nickname") {
                    foreach ($i as &$v) {
                        $v = mb_convert_case($v, MB_CASE_LOWER);
                    }
                }
                if ($field == "address") {
                    foreach ($i as &$v) {
                        $v = mb_convert_case($v, MB_CASE_TITLE);
                    }
                }
                if ($field == "email") {
                    foreach ($i as &$v) {
                        $v = mb_convert_case($v, MB_CASE_LOWER);
                        $v = str_replace([" ", "\t", "\n"], "", $v);
                    }
                }
            }
        }
    }
}

// unset variables passed by reference before reusing them
unset($i, $entry, $v);

// output tab-delimited table

foreach ($fields as $field) {
    print_r($field . "\t");
}
print_r("\n");

date_default_timezone_set("America/Vancouver");
foreach ($book as $entry) {
    foreach ($fields as $field) {
        if (isset($entry[$field])) {
            $i = $entry[$field];
            ($field == "name" || $field == "pronouns" || $field == "notes") && print_r(str_replace("\n", ", ", $i));
            ($field == "birthdate" || $field == "created" || $field == "updated") && print_r(date("Y.m.d h.i.s", $i));
            $field == "nickname" && print_r(implode(", ", $i));
            if ($field == "address" || $field == "email" || $field == "phone" || $field == "url" || $field == "socials") {
                $build = [];
                foreach ($i as $k => $v) {
                    $build[] = $k . " - " . str_replace("\n", ", ", $v);
                }
                print_r(implode(", ", $build));
            }
        }
        print_r("\t"); // after each element
    }
    print_r("\n"); // after each entry
}