Instalace mPDF na PHP 7.4 skrze composer

Dobrý den všem přeji. :)

Snažím se nainstalovat mPDF skrze composer composer require mpdf/mpdf, ale bez úspěchu.

Terminál mi hlásí:

Using version ^8.0 for mpdf/mpdf
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - mpdf/mpdf v8.0.5 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - mpdf/mpdf v8.0.4 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - mpdf/mpdf v8.0.3 requires php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 -> your PHP version (7.4.2) does not satisfy that requirement.
    - mpdf/mpdf v8.0.2 requires php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 -> your PHP version (7.4.2) does not satisfy that requirement.
    - mpdf/mpdf v8.0.1 requires php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 -> your PHP version (7.4.2) does not satisfy that requirement.
    - mpdf/mpdf v8.0.0 requires php ^5.6 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 -> your PHP version (7.4.2) does not satisfy that requirement.
    - Installation request for mpdf/mpdf ^8.0 -> satisfiable by mpdf/mpdf[v8.0.0, v8.0.1, v8.0.2, v8.0.3, v8.0.4, v8.0.5].

  To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/7.4/cli/php.ini
    - /etc/php/7.4/cli/conf.d/10-mysqlnd.ini
    - /etc/php/7.4/cli/conf.d/10-opcache.ini
    - /etc/php/7.4/cli/conf.d/10-pdo.ini
    - /etc/php/7.4/cli/conf.d/15-xml.ini
    - /etc/php/7.4/cli/conf.d/20-apcu.ini
    - /etc/php/7.4/cli/conf.d/20-calendar.ini
    - /etc/php/7.4/cli/conf.d/20-ctype.ini
    - /etc/php/7.4/cli/conf.d/20-curl.ini
    - /etc/php/7.4/cli/conf.d/20-dom.ini
    - /etc/php/7.4/cli/conf.d/20-exif.ini
    - /etc/php/7.4/cli/conf.d/20-ffi.ini
    - /etc/php/7.4/cli/conf.d/20-fileinfo.ini
    - /etc/php/7.4/cli/conf.d/20-ftp.ini
    - /etc/php/7.4/cli/conf.d/20-gd.ini
    - /etc/php/7.4/cli/conf.d/20-gettext.ini
    - /etc/php/7.4/cli/conf.d/20-iconv.ini
    - /etc/php/7.4/cli/conf.d/20-igbinary.ini
    - /etc/php/7.4/cli/conf.d/20-imagick.ini
    - /etc/php/7.4/cli/conf.d/20-intl.ini
    - /etc/php/7.4/cli/conf.d/20-json.ini
    - /etc/php/7.4/cli/conf.d/20-memcache.ini
    - /etc/php/7.4/cli/conf.d/20-msgpack.ini
    - /etc/php/7.4/cli/conf.d/20-mysqli.ini
    - /etc/php/7.4/cli/conf.d/20-pdo_mysql.ini
    - /etc/php/7.4/cli/conf.d/20-phar.ini
    - /etc/php/7.4/cli/conf.d/20-posix.ini
    - /etc/php/7.4/cli/conf.d/20-readline.ini
    - /etc/php/7.4/cli/conf.d/20-shmop.ini
    - /etc/php/7.4/cli/conf.d/20-simplexml.ini
    - /etc/php/7.4/cli/conf.d/20-sockets.ini
    - /etc/php/7.4/cli/conf.d/20-sysvmsg.ini
    - /etc/php/7.4/cli/conf.d/20-sysvsem.ini
    - /etc/php/7.4/cli/conf.d/20-sysvshm.ini
    - /etc/php/7.4/cli/conf.d/20-tokenizer.ini
    - /etc/php/7.4/cli/conf.d/20-xdebug.ini
    - /etc/php/7.4/cli/conf.d/20-xmlreader.ini
    - /etc/php/7.4/cli/conf.d/20-xmlwriter.ini
    - /etc/php/7.4/cli/conf.d/20-xsl.ini
    - /etc/php/7.4/cli/conf.d/25-apcu_bc.ini
    - /etc/php/7.4/cli/conf.d/25-memcached.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

Installation failed, reverting ./composer.json to its original content.

A po zadání php –ini mi vylezl tento report:

Configuration File (php.ini) Path: /etc/php/7.4/cli
Loaded Configuration File:         /etc/php/7.4/cli/php.ini
Scan for additional .ini files in: /etc/php/7.4/cli/conf.d
Additional .ini files parsed:      /etc/php/7.4/cli/conf.d/10-mysqlnd.ini,
/etc/php/7.4/cli/conf.d/10-opcache.ini,
/etc/php/7.4/cli/conf.d/10-pdo.ini,
/etc/php/7.4/cli/conf.d/15-xml.ini,
/etc/php/7.4/cli/conf.d/20-apcu.ini,
/etc/php/7.4/cli/conf.d/20-calendar.ini,
/etc/php/7.4/cli/conf.d/20-ctype.ini,
/etc/php/7.4/cli/conf.d/20-curl.ini,
/etc/php/7.4/cli/conf.d/20-dom.ini,
/etc/php/7.4/cli/conf.d/20-exif.ini,
/etc/php/7.4/cli/conf.d/20-ffi.ini,
/etc/php/7.4/cli/conf.d/20-fileinfo.ini,
/etc/php/7.4/cli/conf.d/20-ftp.ini,
/etc/php/7.4/cli/conf.d/20-gd.ini,
/etc/php/7.4/cli/conf.d/20-gettext.ini,
/etc/php/7.4/cli/conf.d/20-iconv.ini,
/etc/php/7.4/cli/conf.d/20-igbinary.ini,
/etc/php/7.4/cli/conf.d/20-imagick.ini,
/etc/php/7.4/cli/conf.d/20-intl.ini,
/etc/php/7.4/cli/conf.d/20-json.ini,
/etc/php/7.4/cli/conf.d/20-mbstring.ini,
/etc/php/7.4/cli/conf.d/20-memcache.ini,
/etc/php/7.4/cli/conf.d/20-msgpack.ini,
/etc/php/7.4/cli/conf.d/20-mysqli.ini,
/etc/php/7.4/cli/conf.d/20-pdo_mysql.ini,
/etc/php/7.4/cli/conf.d/20-phar.ini,
/etc/php/7.4/cli/conf.d/20-posix.ini,
/etc/php/7.4/cli/conf.d/20-readline.ini,
/etc/php/7.4/cli/conf.d/20-shmop.ini,
/etc/php/7.4/cli/conf.d/20-simplexml.ini,
/etc/php/7.4/cli/conf.d/20-sockets.ini,
/etc/php/7.4/cli/conf.d/20-sysvmsg.ini,
/etc/php/7.4/cli/conf.d/20-sysvsem.ini,
/etc/php/7.4/cli/conf.d/20-sysvshm.ini,
/etc/php/7.4/cli/conf.d/20-tokenizer.ini,
/etc/php/7.4/cli/conf.d/20-xdebug.ini,
/etc/php/7.4/cli/conf.d/20-xmlreader.ini,
/etc/php/7.4/cli/conf.d/20-xmlwriter.ini,
/etc/php/7.4/cli/conf.d/20-xsl.ini,
/etc/php/7.4/cli/conf.d/20-zip.ini,
/etc/php/7.4/cli/conf.d/25-apcu_bc.ini,
/etc/php/7.4/cli/conf.d/25-memcached.ini

Jak můžeme vidět, chyba je v tom, že „the requested PHP extension mbstring is missing from your system“, ale v nainstalován je.

Nevíte někdo, kde by mohla být chybička a proč mi to nejde? :) Popřípadě pokud je mPDF špatné, co mi doporučíte na generování PDF souboru (mám v plánu udělat fakturační systém do e-shopu). :)

Děkuji všem za pomoc. :)

Editoval Rndoom04 (11. 2. 2020 16:22)