(PECL ds >= 1.0.0)
Ds\Stack::peek — Returns the value at the top of the stack
Returns the value at the top of the stack, but does not remove it.
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The value at the top of the stack.
UnderflowException if empty.
Example #1 Ds\Stack::peek() example
<?php
$stack = new \Ds\Stack();
$stack->push("a");
$stack->push("b");
$stack->push("c");
var_dump($stack->peek());
?>
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string(1) "c"