moodle_local_treestudyplan/build.php

<?php
$plugin = new stdClass;
include('version.php');

$a = explode("_",$plugin->component,2);
$plugin->type = $a[0];
$plugin->name = $a[1];

$exclude_paths = [
    "build",     // dir for build zip files
    "build/*",
    "build.*",
    "amd/src",
    "amd/src/*",
    ".git",
    ".git/*",
    ".gitignore",
    "*.zip",
];

// Determine some paths 
$wd = realpath(dirname(__FILE__));
$parent = dirname($wd);
$plugindirname = basename($wd);
$builddir = $wd."/"."build";
$zipname = $builddir."/"."{$plugin->name}-{$plugin->version}.zip";

// create the exclude line
$exclude = "-x ";
foreach($exclude_paths as $x){
    $exclude .= "'{$plugindirname}/{$x}' ";
}

if(!is_dir($builddir)){
    mkdir($builddir);
    if(!is_dir($builddir)){
        print("Cannot access dir '{$builddir}' to store zip files\n");
        exit(1);
    }
}

if(file_exists($zipfile)){
    print("Zip file '{$zipfile}' already exists. Exiting...\n");
    exit(1);
}

$cwd = getcwd();
chdir($parent);

$cmd = "zip -r '{$zipname}' '{$plugindirname}' {$exclude}";
system($cmd);

chdir($cwd);