The Ds\Collection::clear() function is an inbuilt function in PHP which is used to remove all values from the collection.
Syntax:
Ds\Collection::clear( void )
Parameters: This function does not accepts any parameters.
Return Value: This function does not return any value.
Below programs illustrate the Ds\Collection::clear() function in PHP:
Example 1:
<?php // Create a collection $collection = new \Ds\Vector([1, 2, 3, 4, 5, 6]); // Display the collection element print_r( $collection ); // Use clear() function to remove elements $collection ->clear(); // Display the collection element print_r( $collection ); ?> |
Output:
Ds\Vector Object ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 ) Ds\Vector Object ( )
Example 2:
<?php // Create a collection $collection = new \Ds\Vector([10, 15, 21, 13, 16, 18]); // Display the collection element var_dump( $collection ); // Use clear() function to remove elements $collection ->clear(); // Display the collection element var_dump( $collection ); ?> |
Output:
object(Ds\Vector)#1 (6) { [0]=> int(10) [1]=> int(15) [2]=> int(21) [3]=> int(13) [4]=> int(16) [5]=> int(18) } object(Ds\Vector)#1 (0) { }