general.php

php网页设计

		}
	}

function change_password($password)
	{
	# Sets a new password for the current user.
	global $userref,$username;
	if (strlen($password)<6) {return false;}
	$password_hash=md5("RS" . $username . $password);
	sql_query("update user set password='$password_hash' where ref='$userref' limit 1");
	return true;
	}
	
function make_password($length,$strength=0) {
    $vowels = 'aeiou';
    $consonants = 'bdghjlmnpqrstvwxz';
    if ($strength & 1) {
        $consonants .= 'BDGHJLMNPQRSTVWXZ';
    }
    if ($strength & 2) {
        $vowels .= "AEIOU";
    }
    if ($strength & 4) {
        $consonants .= '123456789';
    }
    if ($strength & 8) {
        $consonants .= '@#$%^';
    }
    $password = '';
    $alt = time() % 2;
    srand(time());
    for ($i = 0; $i < $length; $i++) {
        if ($alt == 1) {
            $password .= $consonants[(rand() % strlen($consonants))];
            $alt = 0;
        } else {
            $password .= $vowels[(rand() % strlen($vowels))];
            $alt = 1;
        }
    }
    return $password;
}


function bulk_mail($userlist,$subject,$text)
	{
	global $email_from,$lang;
	
	# Attempt to resolve all users in the string $userlist to user references.
	if (trim($userlist)=="") {return ($lang["mustspecifyoneuser"]);}
	$ulist=trim_array(explode(",",$userlist));
	$urefs=sql_array("select ref value from user where username in ('" . join("','",$ulist) . "')");
	if (count($ulist)!=count($urefs)) {return($lang["couldnotmatchusers"]);}

	# Send an e-mail to each resolved user
	$emails=sql_array("select email value from user where ref in ('" . join("','",$urefs) . "')");
	for ($n=0;$n<count($emails);$n++)
		{
		//send_mail($emails[$n],$subject,str_replace("\\r\\n","\n",$text));
		
		//+ Camillo
		send_mail($emails[$n],$subject,stripslashes(str_replace("\\r\\n","\n",$text)));
		//- Camillo
		}
		
	# Return an empty string (all OK).
	return "";
	}

function i18n_get_translated($text)
	{
	# For field names / values using the i18n syntax, return the version in the current user's language
	# Format is ~en:Somename~es:Someothername
	$text=trim($text);
	
	# For multiple keywords, parse each keyword.
	if ((strpos($text,",")!==false) && (strpos($text,"~")!==false)) {$s=explode(",",$text);$out="";for ($n=0;$n<count($s);$n++) {if ($out!="") {$out.=",";}; $out.=i18n_get_translated(trim($s[$n]));};return $out;}
	
	global $language;
	
	# Split
	$s=explode("~",$text);

	# Not a translatable field?
	if (count($s)<2) {return $text;}

	# Find the current language and return it
	for ($n=1;$n<count($s);$n++)
		{
		if (substr($s[$n],2,1)!=":") {return $text;}
		if (substr($s[$n],0,2)==$language) {return substr($s[$n],3);}
		}	
	
	# No language match, return the first item
	return substr($s[0],3);
	}

function i18n_get_indexable($text)
	{
	# For field names / values using the i18n syntax, return all language versions, as necessary for indexing.
	$text=trim($text);
	
	# For multiple keywords, parse each keyword.
	if ((strpos($text,",")!==false) && (strpos($text,"~")!==false)) {$s=explode(",",$text);$out="";for ($n=0;$n<count($s);$n++) {if ($n>0) {$out.=",";}; $out.=i18n_get_indexable(trim($s[$n]));};return $out;}

	# Split
	$s=explode("~",$text);

	# Not a translatable field?
	if (count($s)<2) {return $text;}

	$out="";
	for ($n=1;$n<count($s);$n++)
		{
		if (substr($s[$n],2,1)!=":") {return $text;}
		if ($out!="") {$out.=",";}
		$out.=substr($s[$n],3);
		}	
	return $out;
	}

function send_mail($email,$subject,$message,$from="")
	{
	# Send a mail - but correctly encode the message/subject in quoted-printable UTF-8.
	
	# Include footer
	global $email_footer;
	global $disable_quoted_printable_enc;
	
	$message.="\r\n\r\n\r\n" . $email_footer;
	
	if ($disable_quoted_printable_enc==false){
	$message=quoted_printable_encode($message);
	$subject=quoted_printable_encode_subject($subject);
	}
	
	global $email_from;
	if ($from=="") {$from=$email_from;}
	mail ($email,$subject,$message,"From: " . $from . "\r\nMIME-Version: 1.0\r\nContent-Type: text/plain; charset=\"UTF-8\"\r\nContent-Transfer-Encoding: quoted-printable");
	}

function quoted_printable_encode($string, $linelen = 0, $linebreak="=\r\n", $breaklen = 0, $encodecrlf = false) {
        // Quoted printable encoding is rather simple.
        // Each character in the string $string should be encoded if:
        //  Character code is <0x20 (space)
        //  Character is = (as it has a special meaning: 0x3d)
        //  Character is over ASCII range (>=0x80)
        $len = strlen($string);
        $result = '';
        for($i=0;$i<$len;$i++) {
                if (($linelen >= 76) && (false)) { // break lines over 76 characters, and put special QP linebreak
                        $linelen = $breaklen;
                        $result.= $linebreak;
                }
                $c = ord($string[$i]);
                if (($c==0x3d) || ($c>=0x80) || ($c<0x20)) { // in this case, we encode...
                        if ((($c==0x0A) || ($c==0x0D)) && (!$encodecrlf)) { // but not for linebreaks
                                $result.=chr($c);
                                $linelen = 0;
                                continue;
                        }
                        $result.='='.str_pad(strtoupper(dechex($c)), 2, '0');
                        $linelen += 3;
                        continue;
                }
                $result.=chr($c); // normal characters aren't encoded
                $linelen++;
        }
        return $result;
}

function quoted_printable_encode_subject($string, $encoding='UTF-8') {
// use this function with headers, not with the email body as it misses word wrapping
       $len = strlen($string);
       $result = '';
       $enc = false;
       for($i=0;$i<$len;++$i) {
        $c = $string[$i];
        if (ctype_alpha($c))
            $result.=$c;
        else if ($c==' ') {
            $result.='_';
            $enc = true;
        } else {
            $result.=sprintf("=%02X", ord($c));
            $enc = true;
        }
       }
       //L: so spam agents won't mark your email with QP_EXCESS
       if (!$enc) return $string;
       return '=?'.$encoding.'?q?'.$result.'?=';
}

function highlightkeywords($text,$search)
	{
	# Highlight searched keywords in $text
	# Optional - depends on $highlightkeywords being set in config.php.
	global $highlightkeywords;
	# Situations where we do not need to do this.
	if (!isset($highlightkeywords) || ($highlightkeywords==false) || ($search=="") || ($text=="") || (substr($search,0,1)=="!")) {return $text;}
	
	global $hlkeycache;
	if (!isset($hlkeycache))
		{
		# Generate the cache of search keywords (this is a global variable, so the next time the function is called we don't need to regenerate the list
		$hlkeycache=array();
		$s=split_keywords($search);
		for ($n=0;$n<count($s);$n++)
			{
			if (strpos($s[$n],":")!==false) {$c=explode(":",$s[$n]);$s[$n]=$c[1];}
			$hlkeycache[]=$s[$n];
			}
		}

	# Parse and replace.
	return str_highlight ($text,$hlkeycache,STR_HIGHLIGHT_WHOLEWD);
	}


# These lines go with str_highlight (next).
define('STR_HIGHLIGHT_SIMPLE', 1);
define('STR_HIGHLIGHT_WHOLEWD', 2);
define('STR_HIGHLIGHT_CASESENS', 4);
define('STR_HIGHLIGHT_STRIPLINKS', 8);

function str_highlight($text, $needle, $options = null, $highlight = null)
	{
	# Thanks to Aidan Lister <[e-mail]>
	# Sourced from http://aidanlister.com/repos/v/function.str_highlight.php on 2007-10-09
	# License on the website reads: "All code on this website resides in the Public Domain, you are free to use and modify it however you wish."
	# http://aidanlister.com/repos/license/
	
    // Default highlighting
    if ($highlight === null) {
        $highlight = '<span class="highlight">\1</span>';
    }
 
    // Select pattern to use
    if ($options & STR_HIGHLIGHT_SIMPLE) {
        $pattern = '#(%s)#';
        $sl_pattern = '#(%s)#';
    } else {
        $pattern = '#(?!<.*?)(%s)(?![^<>]*?>)#';
        $sl_pattern = '#<a\s(?:.*?)>(%s)</a>#';
    }
 
    // Case sensitivity
    if (!($options & STR_HIGHLIGHT_CASESENS)) {
        $pattern .= 'i';
        $sl_pattern .= 'i';
    }
 
    $needle = (array) $needle;
    foreach ($needle as $needle_s) {
        $needle_s = preg_quote($needle_s);
 
        // Escape needle with optional whole word check
        if ($options & STR_HIGHLIGHT_WHOLEWD) {
            $needle_s = '\b' . $needle_s . '\b';
        }
 
        // Strip links
        if ($options & STR_HIGHLIGHT_STRIPLINKS) {
            $sl_regex = sprintf($sl_pattern, $needle_s);
            $text = preg_replace($sl_regex, '\1', $text);
        }
 
        $regex = sprintf($pattern, $needle_s);
        $text = preg_replace($regex, $highlight, $text);
    }
 
    return $text;
	}

function pager($break=true)
	{
	global $curpage,$url,$totalpages,$offset,$per_page,$lang,$jumpcount;
	$jumpcount++;
    ?>
	        <span class="HorizontalWhiteNav"><? if ($break) { ?>&nbsp;<br /><? } ?><? if ($curpage>1) { ?><a href="<?=$url?>&offset=<?=$offset-$per_page?>"><? } ?>&lt;&nbsp;<?=$lang["previous"]?><? if ($curpage>1) { ?></a><? } ?>&nbsp;|&nbsp;<a href="#" title="Jump to page" onClick="p=document.getElementById('jumppanel<?=$jumpcount?>');if (p.style.display!='block') {p.style.display='block';document.getElementById('jumpto<?=$jumpcount?>').focus();} else {p.style.display='none';}; return false;"><?=$lang["page"]?>&nbsp;<?=$curpage?>&nbsp;<?=$lang["of"]?>&nbsp;<?=$totalpages?></a>&nbsp;|&nbsp;<? if ($curpage<$totalpages) { ?><a href="<?=$url?>&offset=<?=$offset+$per_page?>"><? } ?><?=$lang["next"]?>&nbsp;&gt;<? if ($curpage<$totalpages) { ?></a><? } ?>
	   	   </span>
	   	   <div id="jumppanel<?=$jumpcount?>" style="display:none;margin-top:5px;"><?=$lang["jumptopage"]?>: <input type="text" size="3" id="jumpto<?=$jumpcount?>">&nbsp;<input type="submit" name="jump" value="<?=$lang["jump"]?>" onClick="var jumpto=document.getElementById('jumpto<?=$jumpcount?>').value;if ((jumpto>0) && (jumpto<=<?=$totalpages?>)) {document.location='<?=$url?>&offset=' + ((jumpto-1) * <?=$per_page?>);}"></div>
   	<?
	}
	
function get_all_image_sizes($internal=false)
	{
	# Returns all image sizes available.
	return sql_query("select * from preview_size " . (($internal)?"":"where internal!=1") . " order by width asc");
	}
	
function get_user_log($user)
	{
	return sql_query("select r.ref resourceid,r.title resourcetitle,l.date,l.type,f.title from resource_log l join resource r on l.resource=r.ref left outer join resource_type_field f on f.ref=l.resource_type_field where l.user='$user' order by l.date");
	}
	
function get_breadcrumbs()
	{
	# Returns a HTML breadcrumb trail for display at the top of the screen.

	# Fetch the variables we need to construct the trail.
	$search=getvalescaped("search","");
	$bc_from=getvalescaped("bc_from","");
	$search=getvalescaped("search","");
	global $pagename,$lang;
	$bc="";
	
	switch($pagename)
		{
		# ------- Themes page
		case "themes":
		$bc="<a href=\"themes.php\">" . $lang["themes"] . "</a>";
		break;
		
		# ------- Search results
		case "search":
		# From themes page?
		if ($bc_from=="themes")
			{$bc="<a href=\"themes.php\">" . $lang["themes"] . "</a>&nbsp;-&gt;&nbsp;";}

		$bc.="<a href=\"search.php?search=" . urlencode($search) . "&bc_from=themes\">" . $lang["searchresults"] . "</a>";
		break;
		}
		
	return "You are here: " . $bc;
	}
?>