install.php

<?php

$zip_file = 'hledger.zip';
$bin = 'bin';
$hledger = 'hledger';
$hledger_ui = 'hledger-ui';
$hledger_web = 'hledger-web';

chdir(__DIR__);

if (strtoupper(substr(PHP_OS, 0, 5)) === 'LINUX') {
    $os = 'ubuntu';
} elseif (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
    $os = 'windows';
    $hledger .= '.exe';
    $hledger_ui .= '.exe';
    $hledger_web .= '.exe';
} elseif (strtoupper(substr(PHP_OS, 0, 6)) === 'DARWIN') {
    $os = 'macos';
} else {
    echo("Can't detect OS: " . PHP_OS);
    exit(1);
}

$version = '1.21';

$url = "https://github.com/simonmichael/hledger/releases/download/${version}/hledger-${os}.zip";

$ch = curl_init($url);
$fp = fopen($zip_file, "w");
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_exec($ch);
if (curl_error($ch)) {
    echo("Error downloading hledger: " . curl_error($ch));
    exit(1);
}
curl_close($ch);
fclose($fp);

$zip = new ZipArchive;
$result = $zip->open($zip_file);
if ($result === true) {
    $zip->extractTo("$bin/");
    $zip->close();
} else {
    echo("Error unzipping hledger");
    exit(1);
}

if (file_exists("$bin/$hledger_ui"))
    unlink("$bin/$hledger_ui");
if (file_exists("$bin/$hledger_web"))
    unlink("$bin/$hledger_web");
if (file_exists($zip_file))
    unlink($zip_file);

chmod("$bin/$hledger", 0755);