Códigos Fuente de PHP

hasDuplicates([1, 2, 3, 4, 5, 5]); // true

hasDuplicates([1, 2, 3, 4, 5, 6]); // false

$a2 = ["lively", "alive", "harp", "sharp", "armstrong"];

$a1 = ["arp", "live", "strong"];

inArray($a1, $a2); // ["arp", "live", "strong"]

$a1 = ["xyz", "live", "strong"];

inArray($a1, $a2); // ["live", "strong"]

$a1 = ["live", "strong", "arp"];

inArray($a1, $a2); // ["arp", "live", "strong"]

$a1 = [];

inArray($a1, $a2); // []

$string="     El\n  sol\n   brilla";

removeSpacePrevLines($string); // "   El\nsol\n brilla";

$string="  El\n   sol\n  brilla";

removeSpacePrevLines($string); // "El\n sol\nbrilla";

$cadena="El      \nsol  \nbrilla   ";

removeSpaceEndLines($cadena); // "El\nsol\nbrilla"

findIt([20,1,-1,2,-2,3,3,3,3,3,5,5,1,2,4,20,4,-1,-2,5]); // 3

findIt([1,1,2,5,2,4,4,-1,-1,-1,-2,5]); // -1

findIt([1,1,1,2,2,2,5,5,5,5,5,6,6,6,6,6,6]); // 5

findIt([10]); // 10

findIt([1,1,1,1,1,1,10,1,1,1]); // 1

findIt([20,1,-1,2,-2,3,3,5,5,1,2,4,20,4,-1,-2,5]) // 5;

findIt([1,1,2,-2,5,2,4,4,-1,-2,5]); // -1

findIt([20,1,1,2,2,3,3,5,5,4,20,4,5]); // 5

findIt([10]); // 10

findIt([1,1,1,1,1,1,10,1,1,1,1]); // 10

lcm(12, 7); // 84

lcm(1, 3, 4, 5); // 60

maxN([1, 2, 3, 4, 5, 5, 4, 5]); // 3

maxN([1, 2, 3, 4, 5]); // 1

$array=[

    ['product_id' => 'p100', 'nombre' => 'Mesa'],

    ['product_id' => 'p200', 'nombre' => 'Silla'],

    ['product_id' => 'p300', 'nombre' => 'Television'],

];

print_r(getValues($array, 'product_id')); // ['p100', 'p200', 'p300']

print_r(getValues($array, 'nombre')); // ['Mesa', 'Silla', 'Television']

print_r(getValues($array, 'direccion')); // ['', '', ''] (No existe el key: direccion)