Common Array Functions

<?php
$a = ["php", "sql"];
$b = ["css", "js"];

echo implode(", ", array_merge($a, $b));

php, sql, css, js

<?php
$letters = ["a", "b", "c", "d", "e"];

echo implode(", ", array_slice($letters, 1, 3)) . "\n";   // 3 items from position 1
echo implode(", ", array_slice($letters, -2));            // last 2

b, c, d
d, e

<?php
$tags = ["php", "web", "php", "css", "web"];

echo implode(", ", array_unique($tags));

php, web, css

<?php
$items = [1, 2, 3, 4, 5, 6, 7];

foreach (array_chunk($items, 3) as $row) {
    echo implode(" ", $row) . "\n";
}

1 2 3
4 5 6
7

<?php
$all = ["a", "b", "c", "d"];
$owned = ["b", "d"];

echo implode(", ", array_diff($all, $owned)) . "\n";       // in $all but not in $owned
echo implode(", ", array_intersect($all, $owned));          // in both

a, c
b, d

<?php
echo implode(" ", range(1, 5)) . "\n";
echo implode(" ", range(0, 20, 5)) . "\n";
echo implode(" ", range("a", "e"));

1 2 3 4 5
0 5 10 15 20
a b c d e

<?php
$numbers = [1, 2, 3];

echo implode(", ", array_reverse($numbers)) . "\n";
echo array_sum($numbers) . "\n";
echo array_product($numbers);

3, 2, 1
6
6

<?php
$name = "Isha";
$city = "Kochi";

print_r(compact("name", "city"));

Array
(
    [name] => Isha
    [city] => Kochi
)