The SplPriorityQueue::rewind() function is an inbuilt function in PHP which is used to rewind the iterator back to the start position.
Syntax:
void SplPriorityQueue::rewind()
Parameters: This function does not accept any parameter.
Return Value: This function does not return any value.
Example:
PHP
<?php // Declare a class class priorityQueue extends SplPriorityQueue {
// Compare function to compare priority
// queue elements
public function compare( $p1 , $p2 ) {
if ( $p1 === $p2 ) return 0;
return $p1 < $p2 ? -1 : 1;
}
} // Create an object of priority queue $obj = new priorityQueue();
// Insert elements into the queue $obj ->insert( "Geeks" ,2);
$obj ->insert( "GFG" ,1);
$obj ->insert( "G4G" ,3);
$obj ->insert( 'G' ,4);
// Use rewind() function $obj -> rewind ();
// Print the priority queue elements var_dump( $obj ->current());
?> |
Output
string(1) "G"
Reference: https://www.php.net/manual/en/splpriorityqueue.rewind.php