Syntax:void public DsVector::unshift ($values)
Parameters: This function takes one parameter $values, which contains the values to be added to the vector.Return value:This function does not return any value .The following programs illustrate the Ds / Vector::unshift()function in PHP:Program 1:
// Create a new vector $vect = new DsVector ([3, 6, 1, 2, 9, 7]); echo ( " Original vector: " );
// Show vector elements print_r ( $vect ); echo ( " Array elements after inserting new element " );
// Use the unshift() function to link elements $vect -> unshift (10, 20, 30);
// Show updated vector elements print_r ( $vect );
?> Output:Original vector: DsVector Object ([0] = > 3 [1] = > 6 [2] = > 1 [3] = > 2 [4] = > 9 [5] = > 7) Array elements after inserting a new element DsVector Object ([0] = > 10 [1] = > 20 [2] = > 30 [3] = > 3 [4] = > 6 [5 ] = > 1 [6] = > 2 [7] = > 9 [8] = > 7)
Program 2:
// Create a new vector $vect = new DsVector ([ " engineer " , "for" , "engineer" ]); echo ( " Original vector: " );
// Show vector elements print_r ( $vect ); echo ( " Array elements after inserting new element " );
// Use the unshift() function to link elements $vect -> unshift ( "PHP articles" );
// Show updated vector elements print_r ( $vect );
?> Output:Original vector: DsVector Object ([0] = > engineer [1] = > for [2] = > engineer) Array elements after inserting a new element DsVector Object ([0] = > PHP articles [1] = > engineer [2] = > for [3] = > engineer)
Link: http://php.net/manual/en/ds-vector.unshift.php
