PHP Ds / Vector shift () function

Syntax:
mixed public DsVector::shift (void)
Parameters: this function takes no parameters.Return value:this function returns a value with index 0.Exception:this the function throws exceptionUnderflowException, if the vector is empty.The programs below illustrate the Ds / Vector::shift function()in PHP:Program 1:
// Vector declaration $vect = new DsVector ([ "engineer" , "of " , " engineer " ]); echo ( " First element in the vector: " );
// Use the shift() function to remove first
// element from the vector and display it var_dump ( $vect -> shift());
?>
Output:
First element in the vector: string (5) "engineer"
Program 2:
// Vector declaration $vect = new DsVector ([1, 2, 3, 4, 5, 6]);
// Use the shift() function to remove first
// element from the vector and display it var_dump ( $vect -> shift()); var_dump ( $vect -> shift()); var_dump ( $vect -> shift()); var_dump ( $vect -> shift());
?>
Output:
int (1) int (2) int (3) int (4)
Link: http://php.net/manual/en/ds-vector.shift.php

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