Question 41480 in PHP Question posted in
Official manual can be found here.

Phalcon Fatal error: Class 'PhalconMvcApplication' not found in – PHP

I have this file directory:
enter image description here
When I open this project in browser: Fatal error: Class ‘PhalconMvcApplication’ not found in…

I read that I have to install composer but when I install composer this errors occure:
enter image description here

How can I run my project?

My composer.json file consists:

    "require": {
        "phalcon/incubator-mailer": "^1.0",
        "smi2/phpclickhouse": "^1.4",
        "hybridauth/hybridauth": "^3.8"
    }
}```
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2

Answers


  1. 0

    There are in fact two problems.

    1. You are missing the phalcon php extension. You can find the instructions on how to install the extension in the official Phalcon documentation.

    2. You need at least php version 7.3 to satisfy the requirements of smi2/phpclickhouse. Since php 7.x is EOL since 26th of November 2022, I’d strongly suggest to upgrade to the latest version which currently is php 8.1.

    Once you resolved the two problems, composer install should run successfully, and the missing classes should be placed in the vendor directory.

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  2. 0

    Following up on some of the other comments, Phalcon 4 is NOT compatible with PHP 8.1. Phalcon 4 requires PHP 7.4.

    If you plan on running PHP 8.1, you will need to install Phalcon 5.1.1.

    You can find the Phalcon installation documentation on at https://phalcon.io

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