PHP version based on composer.json

README.md

Use correct PHP version based on composer.json

Installation

Copy both files to /usr/local/bin or ~/bin and make the php file executable.

Usage

The php script will read the contents of composer.json (if any) and delegate to the correct php version.

getphp.php

<?php

declare(strict_types=1);

const DEFAULT_PHP_VERSION = '7.4';

echo (static function () {
    if (!file_exists('composer.json')) {
        return DEFAULT_PHP_VERSION;
    }
    try {
        $composer = json_decode(file_get_contents('composer.json'), true, 512, JSON_THROW_ON_ERROR);
    } catch (JsonException $exception) {
        return DEFAULT_PHP_VERSION;
    }
    $version = $composer['require']['php'] ?? null;

    if ($version === null) {
        return DEFAULT_PHP_VERSION;
    }

    $version = str_replace(['||', ' ', '^', '~', '*'], ['|', '', '', '', ''], $version);
    $version = explode('|', $version);
    $version = $version[0];

    $length = strlen($version);
    if ($length === 3) {
        return $version;
    }
    if ($length > 3) {
        return substr($version, 0, 3);
    }
    return DEFAULT_PHP_VERSION;
})();

php

#!/bin/bash

SCRIPT_PATH="$(realpath "$0")"
SCRIPT_DIR="$(dirname "$SCRIPT_PATH")"

PHPVERSION="$(php7.4 "$SCRIPT_DIR"/getphp.php)"
PHPCMD="php${PHPVERSION}";

eval ${PHPCMD} $@