wallabag/install/wallabag_compatibility_test.php

<?php
/**
 * wallabag, self hostable application allowing you to not miss any content anymore
 *
 * @category   wallabag
 * @author     Nicolas Lœuillet <nicolas@loeuillet.org>
 * @copyright  2013
 * @license    http://opensource.org/licenses/MIT see COPYING file
 */

function status() {
$app_name = 'wallabag';

$php_ok = (function_exists('version_compare') && version_compare(phpversion(), '5.3.3', '>='));
$pdo_ok = class_exists('PDO');
$pcre_ok = extension_loaded('pcre');
$zlib_ok = extension_loaded('zlib');
$mbstring_ok = extension_loaded('mbstring');
$dom_ok = extension_loaded('DOM');
$iconv_ok = extension_loaded('iconv');
$tidy_ok = function_exists('tidy_parse_string');
$curl_ok = function_exists('curl_exec');
$parse_ini_ok = function_exists('parse_ini_file');
$parallel_ok = ((extension_loaded('http') && class_exists('HttpRequestPool')) || ($curl_ok && function_exists('curl_multi_init')));
$allow_url_fopen_ok = (bool)ini_get('allow_url_fopen');
$filter_ok = extension_loaded('filter');
$gettext_ok = function_exists("gettext");
$gd_ok = extension_loaded('gd');

if (extension_loaded('xmlreader')) {
	$xml_ok = true;
} elseif (extension_loaded('xml')) {
	$parser_check = xml_parser_create();
	xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);
	xml_parser_free($parser_check);
	$xml_ok = isset($values[0]['value']);
} else {
	$xml_ok = false;
}

$status = array('app_name' => $app_name, 'php' => $php_ok, 'pdo' => $pdo_ok, 'xml' => $xml_ok, 'pcre' => $pcre_ok, 'zlib' => $zlib_ok, 'mbstring' => $mbstring_ok, 'dom' => $dom_ok, 'iconv' => $iconv_ok, 'tidy' => $tidy_ok, 'curl' => $curl_ok, 'parse_ini' => $parse_ini_ok, 'parallel' => $parallel_ok, 'allow_url_fopen' => $allow_url_fopen_ok, 'filter' => $filter_ok, 'gettext' => $gettext_ok, 'gd' => $gd_ok);

return $status;
}
function isOkay() {
	return !in_array(false, status());
}

function isPassing() {
	$status = status();
	unset($status['curl'], $status['parallel'], $status['tidy'], $status['gd'], $status['filter']);
	return !in_array(false, $status);
}

?>