wallabag/check_setup.php

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<?php
// PHP 5.3 minimum
if (version_compare(PHP_VERSION, '5.3.3', '<')) {
die('This software require PHP 5.3.3 minimum');
}
// Short tags must be enabled for PHP < 5.4
if (version_compare(PHP_VERSION, '5.4.0', '<')) {
if (! ini_get('short_open_tag')) {
die('This software require to have short tags enabled, check your php.ini => "short_open_tag = On"');
}
}
// Check PDO Sqlite
if (! extension_loaded('pdo_sqlite')) {
die('PHP extension required: pdo_sqlite');
}
// Check ZIP
if (! extension_loaded('zip')) {
die('PHP extension required: zip');
}
// Check if /cache is writeable
if (! is_writable('cache')) {
die('The directory "cache" must be writeable by your web server user');
}
// Check if /db is writeable
if (! is_writable('db')) {
die('The directory "db" must be writeable by your web server user');
}
// install folder still present, need to install wallabag
if (is_dir('install')) {
require('install/index.php');
exit;
}