The Ds\Stack::pop() function of PHP is used to remove the element present at the top of the Stack instance. This function also returns the top element of the stack after removing it.
Syntax:
mixed public Ds\Stack::pop ( void )
Parameters: This function does not accepts any parameters.
Return Valuemixedmixed This function returns the element present at the top of the Stack and removes it from the stack.
Below programs illustrate the Ds\Stack::pop() function in PHP:
Program 1:
<?php // PHP program to illustarte the // pop() function // Create a Stack instance $stack = new \Ds\Stack(); // Pushing elements to Stack $stack->push("Welcome"); $stack->push("to"); $stack->push("GfG"); // Print the initial Stack print_r($stack); // Print the top element and remove it print_r($stack->pop()); // Print the Stack again print_r($stack); ?> |
Output:
Ds\Stack Object
(
[0] => GfG
[1] => to
[2] => Welcome
)
GfG
Ds\Stack Object
(
[0] => to
[1] => Welcome
)
Program 2:
<?php // PHP program to illustarte the // pop() function // Create a Stack instance $stack = new \Ds\Stack(); // Pushing Mixed value elements to Stack $stack->push("Welcome"); $stack->push("to"); $stack->push("GfG"); $stack->push(10); $stack->push(5.5); // Print the Stack initially print_r($stack); // Print the top element and remove it print_r($stack->pop()); // Print the stack again print_r($stack); ?> |
Output:
Ds\Stack Object
(
[0] => 5.5
[1] => 10
[2] => GfG
[3] => to
[4] => Welcome
)
5.5
Ds\Stack Object
(
[0] => 10
[1] => GfG
[2] => to
[3] => Welcome
)
Reference: http://php.net/manual/en/ds-stack.pop.php
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