Perl shift function is similar to perl pop and opposite to Perl Push. It removes and returns the first element of an array, shortening the dimension of the array with 1. Perl pop removes the last element in the array and Perl shift removes the first element.

Perl Shift Syntax

pop (ARRAY)
pop

Perl Shift Examples

!/usr/bin/perl
 
use strict;
use warnings;
 
my @array = (1, 2, 3, 4);
my $size = shift (@array);
 
print "\$size = $size, \@array = @array\n";

The output of the above code is:

$size = 1, @array = 2 3 4