List all currently defined versions of PECL packages

list-pecl-versions.php

<?php

set_error_handler(
    static function ($errno, $errstr, $errfile, $errline)
    {
        $message = trim((string) $errstr);
        if ($message === '') {
            $message = "Unknown error (code: {$errno})";
        }
        if ($errfile) {
            $message .= "\\File: {$errfile}";
            if ($errline) {
                $message .= "\nLine: {$errline}";
            }
        }
        throw new RuntimeException($message);
    },
    -1
);

/**
 * @return string[]
 */
function listPackages(): Generator
{
    $xml = file_get_contents('https://pecl.php.net/rest/p/packages.xml');
    $doc = new DOMDocument();
    $doc->loadXML($xml);
    $xpath = new DOMXpath($doc);
    $xpath->registerNamespace('p', 'http://pear.php.net/dtd/rest.allpackages');
    foreach ($xpath->query('/p:a/p:p') as $p) {
        yield $p->nodeValue;
    }
}

/**
 * @return string[]
 */
function listPackageVersions(string $package): Generator
{
    try {
        $xml = file_get_contents("https://pecl.php.net/rest/r/{$package}/allreleases.xml");
    } catch (RuntimeException $x) {
        if (strpos($x->getMessage(), '404 Not Found') === false) {
            throw $x;
        }
        return;
    }
    $doc = new DOMDocument();
    $doc->loadXML($xml);
    $xpath = new DOMXpath($doc);
    $xpath->registerNamespace('ar', 'http://pear.php.net/dtd/rest.allreleases');
    foreach ($xpath->query('/ar:a/ar:r/ar:v') as $v) {
        yield $v->nodeValue;
    }
}

try {
    $versions = [];
    foreach (listPackages() as $p) {
        $p = strtolower($p);
        foreach (listPackageVersions($p) as $v) {
            if (!in_array($v, $versions, true)) {
                $versions[] = $v;
            }
        }
    }
    usort($versions, 'version_compare');
    echo implode("\n", $versions);
} catch (RuntimeException $x) {
    fwrite(STDERR, $x->getMessage() . "\n");
    exit(1);
}