precheckup.php.svn-base

PHP 知识管理系统（基于树结构的知识管理系统）, 英文原版的PHP源码。

<?php
/**
 * $Id$
 *
 * KnowledgeTree Community Edition
 * Document Management Made Simple
 * Copyright (C) 2008 KnowledgeTree Inc.
 * Portions copyright The Jam Warehouse Software (Pty) Limited
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 3 as published by the
 * Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * You can contact KnowledgeTree Inc., PO Box 7775 #87847, San Francisco, 
 * California 94120-7775, or email [e-mail].
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * KnowledgeTree" logo and retain the original copyright notice. If the display of the 
 * logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
 * must display the words "Powered by KnowledgeTree" and retain the original 
 * copyright notice.
 * Contributor( s): ______________________________________
 *
 */

error_reporting(E_ALL);

require_once('../config/dmsDefaults.php');

function get_php_setting($val) {
    $r =  (ini_get($val) == '1' ? 1 : 0);
    return $r ? 'ON' : 'OFF';
}

function boolSetting($name, $setting, $preferred, $red = true, $message = "") {
    $current = get_php_setting($setting);
    $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, $preferred);
    if ($current == $preferred) {
        $ret .= sprintf('<font color="green"><b>%s</b></font>', $current);
    } else {
        if ($red === true) {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', $current);
        } else {
            $ret .= sprintf('<font color="orange"><b>%s</b></font>', $current);
        }
        if ($message) {
            $ret .= ' (' . $message . ')';
        }
    }
    $ret .= "</td></tr>\n";
    return $ret;
}

function stringSetting($name, $setting, $preferred, $red = true, $message = "") {
    $current = ini_get($setting);
    $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, $preferred);
    if ($current == $preferred) {
        $ret .= sprintf('<font color="green"><b>%s</b></font>', $current);
    } else {
        if ($red === true) {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', $current);
        } else {
            $ret .= sprintf('<font color="orange"><b>%s</b></font>', $current);
        }
        if ($message) {
            $ret .= ' (' . $message . ')';
        }
    }
    $ret .= "</td></tr>\n";
    return $ret;
}

function emptySetting($name, $setting) {
    $current = ini_get($setting);
    $ret = sprintf('<tr><td>%s (%s)</td><td>unset</td><td>', $name, $setting);
    if (($current === false) or ($current === "")) {
        $ret .= sprintf('<font color="green"><b>unset</b></font>');
    } else {
        $ret .= sprintf('<font color="red"><b>Set: %s</b></font>', $current);
    }
    $ret .= "</td></tr>\n";
    return $ret;
}

function writablePath($name, $path) {
    $ret = sprintf('<tr><td>%s (%s)</td><td>', $name, $path);
    if (is_writable('../' . $path)) {
        $ret .= sprintf('<font color="green"><b>Writeable</b></font>');
    } else {
        $ret .= sprintf('<font color="red"><b>Unwriteable</b></font>');
    }
    return $ret;
}

function prettySizeToActualSize($pretty) {
    if (strtoupper(substr($pretty, strlen($pretty) - 1)) == 'G') {
        return (int)substr($pretty, 0, strlen($pretty)) * 1024 * 1024 * 1024;
    }
    if (strtoupper(substr($pretty, strlen($pretty) - 1)) == 'M') {
        return (int)substr($pretty, 0, strlen($pretty)) * 1024 * 1024;
    }
    if (strtoupper(substr($pretty, strlen($pretty) - 1)) == 'K') {
        return (int)substr($pretty, 0, strlen($pretty)) * 1024 * 1024;
    }
    return (int)$pretty;
}

function prettySize($v) {
    $v = (float)$v;
    foreach (array('B', 'K', 'M', 'G') as $unit) {
        if ($v < 1024) {
            return $v . $unit;
        }
        $v = $v / 1024;
    }
}

function get_php_int_setting($val) {
    $r = ini_get($val);
    if ($r === false) {
        return $r;
    }
    return prettySizeToActualSize($r);
}

function bigEnough($name, $setting, $preferred, $bytes = false, $red = true, $zero_ok = false, $minusone_ok = false) {
    $current = get_php_int_setting($setting);
    if ($bytes === true) {
        $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, prettySize($preferred));
    } else {
        $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, $preferred);
    }

    if ($current === false) {
        $ret .= '<font color="green"><b>unset</b></font>';
    } else if ($current >= $preferred) {
        if ($bytes === true) {
            $ret .= sprintf('<font color="green"><b>%s</b></font>', prettySize($current));
        } else {
            $ret .= sprintf('<font color="green"><b>%s</b></font>', $current);
        }
    } else if (($current == 0) && ($zero_ok)) {
        $ret .= sprintf('<font color="green"><b>unlimited (%s)</b></font>', $current);
    } else if (($current == -1) && ($minusone_ok)) {
        $ret .= sprintf('<font color="green"><b>unlimited (%s)</b></font>', $current);
    } else {
        if ($bytes === true) {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', prettySize($current));
        } else {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', $current);
        }
    }

    $ret .= "</td></tr>\n";
    return $ret;
}

function haveExtension($ext) {
    if (extension_loaded($ext)) {
        return true;
    }

    // According to PEAR.php:
    // if either returns true dl() will produce a FATAL error, stop that
    if ((ini_get('enable_dl') != 1) || (ini_get('safe_mode') == 1)) {
        return false;
    }

    $libfileext = '.so';
    $libraryprefix = '';
    if (substr(PHP_OS, 0, 3) == "WIN") {
        $libfileext = '.dll';
        $libraryprefix = 'php_';
    }
    @dl(sprintf("%s%s%s", $libraryprefix, $ext, $libfileext));
    return extension_loaded($ext);
}


function must_extension_loaded($ext, $message = "") {
    if (haveExtension($ext)) {
        return '<b><font color="green">Available</font></b>';
    }
    if ($message) {
        return '<b><font color="red">Unavailable</font></b> (' .  $message . ')';
    }
    return '<b><font color="red">Unavailable</font></b>';
}
function can_extension_loaded($ext, $message = "") {
    if (haveExtension($ext)) {
        return '<b><font color="green">Available</font></b>';
    }
    if ($message) {
    return '<b><font color="orange">Unavailable</font></b> (' . $message . ')';
    }
    return '<b><font color="orange">Unavailable</font></b>';
}

$phpversion = phpversion();
//$phpversion = '5.1'; // for debug

$phpversion5 = version_compare($phpversion, '5.0.0', '>=');
$phpversion522 = version_compare($phpversion, '5.2.2', '>=');
$phpversion6 = version_compare($phpversion, '6.0.0', '<');

if($phpversion5 == 1){
    $phpversion5text = '<b><font color="green">Yes</font></b>';
} else {
    $phpversion5text = '<b><font color="red">No</font></b> <small>(You have PHP version '. $phpversion .' - '.APP_NAME.' does not work with versions less than PHP5 anymore)</small>';
}
if($phpversion522 == 1){
    $phpversion522text = '<b><font color="green">Yes</font></b>';
} else {
    $phpversion522text = '<b><font color="red">No</font></b> <small>(You have PHP version '. $phpversion .' - PHP 5.2.2 or above is recommended)</small>';
}
if($phpversion6 == 1){
    $phpversion6text = '<b><font color="green">Yes</font></b>';
} else {
    $phpversion6text = '<b><font color="red">No</font></b> <small>(You have PHP version '. $phpversion .' - '.APP_NAME.' does not work with versions greater than PHP5 yet)</small>';
}

function running_user() {
    if (substr(PHP_OS, 0, 3) == "WIN") {
        return null;
    }