The SplHeap::__construct() function is an inbuilt function in PHP that is used to create the heap data structure.
Generally, the Heap Data Structure are of two types:
- Max-Heap: In a Max-Heap, the key present at the root node must be greatest among the keys present at all of its children. The same property must be recursively true for all sub-trees in that Binary Tree.
- Min-Heap: In a Min-Heap, the key present at the root node must be minimum among the keys present at all of its children. The same property must be recursively true for all sub-trees in that Binary Tree.
Syntax:
public SplHeap::__construct()
Parameters: This function does not accept any parameter.
Return Value: This function does not return any value.
Below programs illustrate the SplMaxHeap::__construct() function in PHP:
Example 1:
PHP
<?php // Create a new empty Min Heap $heap = new SplMinHeap(); $heap->insert('System'); $heap->insert('GFG'); $heap->insert('ALGO'); $heap->insert('C'); $heap->insert('Geeks'); $heap->insert('neveropen'); // Loop to display the current element of heap for ($heap->top(); $heap->valid(); $heap->next()) { echo $heap->current() . "\n"; } ?> |
Output:
ALGO C GFG Geeks neveropen System
Example 2:
PHP
<?php // Create a new empty Max Heap $heap = new SplMaxHeap(); $heap->insert('System'); $heap->insert('GFG'); $heap->insert('ALGO'); $heap->insert('C'); $heap->insert('Geeks'); $heap->insert('neveropen'); // Loop to display the current element of heap for ($heap->top(); $heap->valid(); $heap->next()) { echo $heap->current() . "\n"; } ?> |
Output:
System neveropen Geeks GFG C ALGO
Reference: https://www.php.net/manual/en/splheap.construct.php
