La función Ds\Deque::push() es una función incorporada en PHP que se usa para agregar los elementos a Deque agregando un elemento al final de Deque.
Sintaxis:
public Ds\Deque::push( $values ) : void
Parámetros: esta función acepta valores de $de parámetro único que contiene los elementos que se agregarán al Deque.
Valor devuelto: esta función no devuelve ningún valor.
Los siguientes programas ilustran la función Ds\Deque::push() en PHP:
Programa 1:
<?php
// Declare a deque
$deck = new \Ds\Deque([10, 20, 30, 40, 50, 60]);
echo("Elements of Deque\n");
// Display the Deque elements
print_r($deck);
echo("\nAdding 70 in the deque\n");
// Use push() function to add elements
$deck->push(70);
echo("\nElements of Deque\n");
// Display the Deque elements
print_r($deck);
?>
Producción:
Elements of Deque
Ds\Deque Object
(
[0] => 10
[1] => 20
[2] => 30
[3] => 40
[4] => 50
[5] => 60
)
Adding 70 in the deque
Elements of Deque
Ds\Deque Object
(
[0] => 10
[1] => 20
[2] => 30
[3] => 40
[4] => 50
[5] => 60
[6] => 70
)
Programa 2:
<?php
// Declare a deque
$deck = new \Ds\Deque([10, 20, 30, 40, 50, 60]);
echo("Elements of Deque\n");
// Display the Deque elements
print_r($deck);
echo("\nAdding elements in the deque\n");
// Use push() function to add elements
$deck->push(...[70, 80, 90, 100]);
echo("\nElements of Deque\n");
// Display the Deque elements
print_r($deck);
?>
Producción:
Elements of Deque
Ds\Deque Object
(
[0] => 10
[1] => 20
[2] => 30
[3] => 40
[4] => 50
[5] => 60
)
Adding elements in the deque
Elements of Deque
Ds\Deque Object
(
[0] => 10
[1] => 20
[2] => 30
[3] => 40
[4] => 50
[5] => 60
[6] => 70
[7] => 80
[8] => 90
[9] => 100
)
Referencia: http://php.net/manual/en/ds-deque.push.php