Class 'Imagick' not found in ZF2

Question

I'm trying to instantiate Imagick in a service class, however, I keep getting the following error message:

Class 'Imagick' not found in Gallery/Service/ImageUploadService.php

I've run convert -version and I get the following response:

Version: ImageMagick 6.7.7-10 2018-07-10 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC Features: OpenMP

Here's my service class:

<?php
namespace Gallery\Service;


class ImageUploadService
{
    private $Imagick;
    private $pdflib;

    public function __construct($pdflib)
    {
        $this->Imagick = new \Imagick();
        $this->pdflib = $pdflib;
    }

    public function registerImage()
    {
        return 'success';
    }

    private function checkFileType()
    {

    }

    private function sanitizeFileName()
    {

    }
}

Answer 1

I ran several of the commands I saw online but to keep it short, running the first command in the following fixed the issue for me:

sudo apt install libmagickwand-dev imagemagick php-dev 
sudo pecl install imagick 
sudo apt-get install php5.6-imagick 
sudo service php5.6-fpm restart