$option)
{
$options[$i] = str_replace("'", '',$option);
}
}
}
mysql_free_result($result);
return $options;
}
// get_boolean transforms a string to a boolean value. If the string is
// "false" (case insensitive), then the boolean value false is returned. In
// any other case, true is returned.
function get_boolean( $string )
{
$boolean = true;
if ( preg_match( '/^false$/i', $string ) )
{
$boolean = false;
}
return $boolean;
}
/**
* returns boolean string 'true' or 'false' if the given var is boolean
*
* @param mixed $var
* @return mixed
*/
function boolean_to_string($var)
{
if (is_bool($var))
{
if ($var)
{
return 'true';
}
else
{
return 'false';
}
}
else
{
return $var;
}
}
// The function get_moment returns a float value coresponding to the number
// of seconds since the unix epoch (1st January 1970) and the microseconds
// are precised : e.g. 1052343429.89276600
function get_moment()
{
$t1 = explode( ' ', microtime() );
$t2 = explode( '.', $t1[0] );
$t2 = $t1[1].'.'.$t2[1];
return $t2;
}
// The function get_elapsed_time returns the number of seconds (with 3
// decimals precision) between the start time and the end time given.
function get_elapsed_time( $start, $end )
{
return number_format( $end - $start, 3, '.', ' ').' s';
}
// - The replace_space function replaces space and '-' characters
// by their HTML equivalent &nbsb; and −
// - The function does not replace characters in HTML tags
// - This function was created because IE5 does not respect the
// CSS "white-space: nowrap;" property unless space and minus
// characters are replaced like this function does.
// - Example :
// My friend
// ( 01234567891111111111222222222233 )
// ( 0123456789012345678901 )
// becomes :
// My friend
function replace_space( $string )
{
//return $string;
$return_string = '';
// $remaining is the rest of the string where to replace spaces characters
$remaining = $string;
// $start represents the position of the next '<' character
// $end represents the position of the next '>' character
$start = 0;
$end = 0;
$start = strpos ( $remaining, '<' ); // -> 0
$end = strpos ( $remaining, '>' ); // -> 16
// as long as a '<' and his friend '>' are found, we loop
while ( is_numeric( $start ) and is_numeric( $end ) )
{
// $treatment is the part of the string to treat
// In the first loop of our example, this variable is empty, but in the
// second loop, it equals 'My friend'
$treatment = substr ( $remaining, 0, $start );
// Replacement of ' ' by his equivalent ' '
$treatment = str_replace( ' ', ' ', $treatment );
$treatment = str_replace( '-', '−', $treatment );
// composing the string to return by adding the treated string and the
// following HTML tag -> 'My friend'
$return_string.= $treatment.substr( $remaining, $start, $end-$start+1 );
// the remaining string is deplaced to the part after the '>' of this
// loop
$remaining = substr ( $remaining, $end + 1, strlen( $remaining ) );
$start = strpos ( $remaining, '<' );
$end = strpos ( $remaining, '>' );
}
$treatment = str_replace( ' ', ' ', $remaining );
$treatment = str_replace( '-', '−', $treatment );
$return_string.= $treatment;
return $return_string;
}
// get_extension returns the part of the string after the last "."
function get_extension( $filename )
{
return substr( strrchr( $filename, '.' ), 1, strlen ( $filename ) );
}
// get_filename_wo_extension returns the part of the string before the last
// ".".
// get_filename_wo_extension( 'test.tar.gz' ) -> 'test.tar'
function get_filename_wo_extension( $filename )
{
return substr( $filename, 0, strrpos( $filename, '.' ) );
}
/**
* returns an array contening sub-directories, excluding "CVS"
*
* @param string $dir
* @return array
*/
function get_dirs($directory)
{
$sub_dirs = array();
if ($opendir = opendir($directory))
{
while ($file = readdir($opendir))
{
if ($file != '.'
and $file != '..'
and is_dir($directory.'/'.$file)
and $file != 'CVS'
and $file != '.svn')
{
array_push($sub_dirs, $file);
}
}
}
return $sub_dirs;
}
// The get_picture_size function return an array containing :
// - $picture_size[0] : final width
// - $picture_size[1] : final height
// The final dimensions are calculated thanks to the original dimensions and
// the maximum dimensions given in parameters. get_picture_size respects
// the width/height ratio
function get_picture_size( $original_width, $original_height,
$max_width, $max_height )
{
$width = $original_width;
$height = $original_height;
$is_original_size = true;
if ( $max_width != "" )
{
if ( $original_width > $max_width )
{
$width = $max_width;
$height = floor( ( $width * $original_height ) / $original_width );
}
}
if ( $max_height != "" )
{
if ( $original_height > $max_height )
{
$height = $max_height;
$width = floor( ( $height * $original_width ) / $original_height );
$is_original_size = false;
}
}
if ( is_numeric( $max_width ) and is_numeric( $max_height )
and $max_width != 0 and $max_height != 0 )
{
$ratioWidth = $original_width / $max_width;
$ratioHeight = $original_height / $max_height;
if ( ( $ratioWidth > 1 ) or ( $ratioHeight > 1 ) )
{
if ( $ratioWidth < $ratioHeight )
{
$width = floor( $original_width / $ratioHeight );
$height = $max_height;
}
else
{
$width = $max_width;
$height = floor( $original_height / $ratioWidth );
}
$is_original_size = false;
}
}
$picture_size = array();
$picture_size[0] = $width;
$picture_size[1] = $height;
return $picture_size;
}
//-------------------------------------------- PhpWebGallery specific functions
/**
* returns an array with a list of {language_code => language_name}
*
* @returns array
*/
function get_languages()
{
$dir = opendir(PHPWG_ROOT_PATH.'language');
$languages = array();
while ($file = readdir($dir))
{
$path = PHPWG_ROOT_PATH.'language/'.$file;
if (is_dir($path) and !is_link($path) and file_exists($path.'/iso.txt'))
{
list($language_name) = @file($path.'/iso.txt');
$languages[$file] = $language_name;
}
}
closedir($dir);
@asort($languages);
@reset($languages);
return $languages;
}
/**
* replaces the $search into $search in the
* given $string.
*
* case insensitive replacements, does not replace characters in HTML tags
*
* @param string $string
* @param string $search
* @param string $style
* @return string
*/
function add_style( $string, $search, $style )
{
//return $string;
$return_string = '';
$remaining = $string;
$start = 0;
$end = 0;
$start = strpos ( $remaining, '<' );
$end = strpos ( $remaining, '>' );
while ( is_numeric( $start ) and is_numeric( $end ) )
{
$treatment = substr ( $remaining, 0, $start );
$treatment = preg_replace( '/('.$search.')/i',
'\\0',
$treatment );
$return_string.= $treatment.substr( $remaining, $start, $end-$start+1 );
$remaining = substr ( $remaining, $end + 1, strlen( $remaining ) );
$start = strpos ( $remaining, '<' );
$end = strpos ( $remaining, '>' );
}
$treatment = preg_replace( '/('.$search.')/i',
'\\0',
$remaining );
$return_string.= $treatment;
return $return_string;
}
// replace_search replaces a searched words array string by the search in
// another style for the given $string.
function replace_search( $string, $search )
{
// FIXME : with new advanced search, this function needs a rewrite
return $string;
$words = explode( ',', $search );
$style = 'background-color:white;color:red;';
foreach ( $words as $word ) {
$string = add_style( $string, $word, $style );
}
return $string;
}
function pwg_log( $file, $category, $picture = '' )
{
global $conf, $user;
if ($conf['log'])
{
if ( ($conf['history_admin'] ) or ( (! $conf['history_admin']) and (!is_admin()) ) )
{
$login = ($user['id'] == $conf['guest_id'])
? 'guest' : addslashes($user['username']);
$query = '
INSERT INTO '.HISTORY_TABLE.'
(date,login,IP,file,category,picture)
VALUES
(NOW(),
\''.$login.'\',
\''.$_SERVER['REMOTE_ADDR'].'\',
\''.addslashes($file).'\',
\''.addslashes(strip_tags($category)).'\',
\''.addslashes($picture).'\')
;';
pwg_query($query);
}
}
}
// format_date returns a formatted date for display. The date given in
// argument can be a unixdate (number of seconds since the 01.01.1970) or an
// american format (2003-09-15). By option, you can show the time. The
// output is internationalized.
//
// format_date( "2003-09-15", 'us', true ) -> "Monday 15 September 2003 21:52"
function format_date($date, $type = 'us', $show_time = false)
{
global $lang;
list($year,$month,$day,$hour,$minute,$second) = array(0,0,0,0,0,0);
switch ( $type )
{
case 'us' :
{
list($year,$month,$day) = explode('-', $date);
break;
}
case 'unix' :
{
list($year,$month,$day,$hour,$minute) =
explode('.', date('Y.n.j.G.i', $date));
break;
}
case 'mysql_datetime' :
{
preg_match('/^(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})$/',
$date, $out);
list($year,$month,$day,$hour,$minute,$second) =
array($out[1],$out[2],$out[3],$out[4],$out[5],$out[6]);
break;
}
}
$formated_date = '';
// before 1970, Microsoft Windows can't mktime
if ($year >= 1970)
{
// we ask midday because Windows think it's prior to midnight with a
// zero and refuse to work
$formated_date.= $lang['day'][date('w', mktime(12,0,0,$month,$day,$year))];
}
$formated_date.= ' '.$day;
$formated_date.= ' '.$lang['month'][(int)$month];
$formated_date.= ' '.$year;
if ($show_time)
{
$formated_date.= ' '.$hour.':'.$minute;
}
return $formated_date;
}
function pwg_query($query)
{
global $conf,$page,$debug,$t2;
$start = get_moment();
$result = mysql_query($query) or my_error($query."\n");
$time = get_moment() - $start;
if (!isset($page['count_queries']))
{
$page['count_queries'] = 0;
$page['queries_time'] = 0;
}
$page['count_queries']++;
$page['queries_time']+= $time;
if ($conf['show_queries'])
{
$output = '';
$output.= '['.$page['count_queries'].'] ';
$output.= "\n".$query;
$output.= "\n".'(this query time : ';
$output.= ''.number_format($time, 3, '.', ' ').' s)';
$output.= "\n".'(total SQL time : ';
$output.= number_format($page['queries_time'], 3, '.', ' ').' s)';
$output.= "\n".'(total time : ';
$output.= number_format( ($time+$start-$t2), 3, '.', ' ').' s)';
$output.= "\n";
$debug .= $output;
}
return $result;
}
function pwg_debug( $string )
{
global $debug,$t2,$page;
$now = explode( ' ', microtime() );
$now2 = explode( '.', $now[0] );
$now2 = $now[1].'.'.$now2[1];
$time = number_format( $now2 - $t2, 3, '.', ' ').' s';
$debug .= '';
$debug.= '['.$time.', ';
$debug.= $page['count_queries'].' queries] : '.$string;
$debug.= "
\n";
}
/**
* Redirects to the given URL
*
* Note : once this function called, the execution doesn't go further
* (presence of an exit() instruction.
*
* @param string $url
* @return void
*/
function redirect( $url )
{
global $user, $template, $lang_info, $conf, $lang, $t2, $page, $debug;
// $refresh, $url_link and $title are required for creating an automated
// refresh page in header.tpl
$refresh = 0;
$url_link = $url;
$title = 'redirection';
include( PHPWG_ROOT_PATH.'include/page_header.php' );
$template->set_filenames( array( 'redirect' => 'redirect.tpl' ) );
$template->parse('redirect');
include( PHPWG_ROOT_PATH.'include/page_tail.php' );
exit();
}
/**
* returns $_SERVER['QUERY_STRING'] whitout keys given in parameters
*
* @param array $rejects
* @returns string
*/
function get_query_string_diff($rejects = array())
{
$query_string = '';
$str = $_SERVER['QUERY_STRING'];
parse_str($str, $vars);
$is_first = true;
foreach ($vars as $key => $value)
{
if (!in_array($key, $rejects))
{
$query_string.= $is_first ? '?' : '&';
$is_first = false;
$query_string.= $key.'='.$value;
}
}
return $query_string;
}
function url_is_remote($url)
{
if (preg_match('/^https?:\/\/[~\/\.\w-]+$/', $url))
{
return true;
}
return false;
}
/**
* returns available template/theme
*/
function get_pwg_themes()
{
$themes = array();
$template_dir = PHPWG_ROOT_PATH.'template';
foreach (get_dirs($template_dir) as $template)
{
foreach (get_dirs($template_dir.'/'.$template.'/theme') as $theme)
{
array_push($themes, $template.'/'.$theme);
}
}
return $themes;
}
/**
* returns thumbnail filepath (or distant URL if thumbnail is remote) for a
* given element
*
* the returned string can represente the filepath of the thumbnail or the
* filepath to the corresponding icon for non picture elements
*
* @param string path
* @param string tn_ext
* @param bool with_rewrite if true returned path can't be used from the script
* @return string
*/
function get_thumbnail_src($path, $tn_ext = '', $with_rewrite = true)
{
global $conf, $user;
if ($tn_ext != '')
{
$src = substr_replace(
get_filename_wo_extension($path),
'/thumbnail/'.$conf['prefix_thumbnail'],
strrpos($path,'/'),
1
);
$src.= '.'.$tn_ext;
if ($with_rewrite==true and !url_is_remote($src) )
{
$src = get_root_url().$src;
}
}
else
{
$src = ($with_rewrite==true) ? get_root_url() : '';
$src .= get_themeconf('mime_icon_dir');
$src.= strtolower(get_extension($path)).'.png';
}
return $src;
}
// my_error returns (or send to standard output) the message concerning the
// error occured for the last mysql query.
function my_error($header)
{
$error = '';
$error.= $header;
$error.= '[mysql error '.mysql_errno().'] ';
$error.= mysql_error();
$error.= '
';
die ($error);
}
/**
* creates an array based on a query, this function is a very common pattern
* used here
*
* @param string $query
* @param string $fieldname
* @return array
*/
function array_from_query($query, $fieldname)
{
$array = array();
$result = pwg_query($query);
while ($row = mysql_fetch_array($result))
{
array_push($array, $row[$fieldname]);
}
return $array;
}
/**
* instantiate number list for days in a template block
*
* @param string blockname
* @param string selection
*/
function get_day_list($blockname, $selection)
{
global $template;
$template->assign_block_vars(
$blockname, array('SELECTED' => '', 'VALUE' => 0, 'OPTION' => '--'));
for ($i = 1; $i <= 31; $i++)
{
$selected = '';
if ($i == (int)$selection)
{
$selected = 'selected="selected"';
}
$template->assign_block_vars(
$blockname, array('SELECTED' => $selected,
'VALUE' => $i,
'OPTION' => str_pad($i, 2, '0', STR_PAD_LEFT)));
}
}
/**
* instantiate month list in a template block
*
* @param string blockname
* @param string selection
*/
function get_month_list($blockname, $selection)
{
global $template, $lang;
$template->assign_block_vars(
$blockname, array('SELECTED' => '',
'VALUE' => 0,
'OPTION' => '------------'));
for ($i = 1; $i <= 12; $i++)
{
$selected = '';
if ($i == (int)$selection)
{
$selected = 'selected="selected"';
}
$template->assign_block_vars(
$blockname, array('SELECTED' => $selected,
'VALUE' => $i,
'OPTION' => $lang['month'][$i]));
}
}
/**
* fill the current user caddie with given elements, if not already in
* caddie
*
* @param array elements_id
*/
function fill_caddie($elements_id)
{
global $user;
include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
$query = '
SELECT element_id
FROM '.CADDIE_TABLE.'
WHERE user_id = '.$user['id'].'
;';
$in_caddie = array_from_query($query, 'element_id');
$caddiables = array_diff($elements_id, $in_caddie);
$datas = array();
foreach ($caddiables as $caddiable)
{
array_push($datas, array('element_id' => $caddiable,
'user_id' => $user['id']));
}
if (count($caddiables) > 0)
{
mass_inserts(CADDIE_TABLE, array('element_id','user_id'), $datas);
}
}
/**
* returns the element name from its filename
*
* @param string filename
* @return string name
*/
function get_name_from_file($filename)
{
return str_replace('_',' ',get_filename_wo_extension($filename));
}
/**
* returns the corresponding value from $lang if existing. Else, the key is
* returned
*
* @param string key
* @return string
*/
function l10n($key)
{
global $lang, $conf;
if ($conf['debug_l10n'] and !isset($lang[$key]))
{
echo '[l10n] language key "'.$key.'" is not defined
';
}
return isset($lang[$key]) ? $lang[$key] : $key;
}
/**
* returns the corresponding value from $themeconf if existing. Else, the
* key is returned
*
* @param string key
* @return string
*/
function get_themeconf($key)
{
global $themeconf;
return $themeconf[$key];
}
/**
* Prepends and appends a string at each value of the given array.
*
* @param array
* @param string prefix to each array values
* @param string suffix to each array values
*/
function prepend_append_array_items($array, $prepend_str, $append_str)
{
array_walk(
$array,
create_function('&$s', '$s = "'.$prepend_str.'".$s."'.$append_str.'";')
);
return $array;
}
/**
* returns search rules stored into a serialized array in "search"
* table. Each search rules set is numericaly identified.
*
* @param int search_id
* @return array
*/
function get_search_array($search_id)
{
if (!is_numeric($search_id))
{
die('Search id must be an integer');
}
$query = '
SELECT rules
FROM '.SEARCH_TABLE.'
WHERE id = '.$search_id.'
;';
list($serialized_rules) = mysql_fetch_row(pwg_query($query));
return unserialize($serialized_rules);
}
/**
* returns the SQL clause from a search identifier
*
* Search rules are stored in search table as a serialized array. This array
* need to be transformed into an SQL clause to be used in queries.
*
* @param int search_id
* @return string
*/
function get_sql_search_clause($search_id)
{
$search = get_search_array($search_id);
// SQL where clauses are stored in $clauses array during query
// construction
$clauses = array();
foreach (array('file','name','comment','keywords','author') as $textfield)
{
if (isset($search['fields'][$textfield]))
{
$local_clauses = array();
foreach ($search['fields'][$textfield]['words'] as $word)
{
array_push($local_clauses, $textfield." LIKE '%".$word."%'");
}
// adds brackets around where clauses
$local_clauses = prepend_append_array_items($local_clauses, '(', ')');
array_push(
$clauses,
implode(
' '.$search['fields'][$textfield]['mode'].' ',
$local_clauses
)
);
}
}
if (isset($search['fields']['allwords']))
{
$fields = array('file', 'name', 'comment', 'keywords', 'author');
// in the OR mode, request bust be :
// ((field1 LIKE '%word1%' OR field2 LIKE '%word1%')
// OR (field1 LIKE '%word2%' OR field2 LIKE '%word2%'))
//
// in the AND mode :
// ((field1 LIKE '%word1%' OR field2 LIKE '%word1%')
// AND (field1 LIKE '%word2%' OR field2 LIKE '%word2%'))
$word_clauses = array();
foreach ($search['fields']['allwords']['words'] as $word)
{
$field_clauses = array();
foreach ($fields as $field)
{
array_push($field_clauses, $field." LIKE '%".$word."%'");
}
// adds brackets around where clauses
array_push(
$word_clauses,
implode(
"\n OR ",
$field_clauses
)
);
}
array_walk(
$word_clauses,
create_function('&$s','$s="(".$s.")";')
);
array_push(
$clauses,
"\n ".
implode(
"\n ".
$search['fields']['allwords']['mode'].
"\n ",
$word_clauses
)
);
}
foreach (array('date_available', 'date_creation') as $datefield)
{
if (isset($search['fields'][$datefield]))
{
array_push(
$clauses,
$datefield." = '".$search['fields'][$datefield]['date']."'"
);
}
foreach (array('after','before') as $suffix)
{
$key = $datefield.'-'.$suffix;
if (isset($search['fields'][$key]))
{
array_push(
$clauses,
$datefield.
($suffix == 'after' ? ' >' : ' <').
($search['fields'][$key]['inc'] ? '=' : '').
" '".$search['fields'][$key]['date']."'"
);
}
}
}
if (isset($search['fields']['cat']))
{
if ($search['fields']['cat']['sub_inc'])
{
// searching all the categories id of sub-categories
$cat_ids = get_subcat_ids($search['fields']['cat']['words']);
}
else
{
$cat_ids = $search['fields']['cat']['words'];
}
$local_clause = 'category_id IN ('.implode(',', $cat_ids).')';
array_push($clauses, $local_clause);
}
// adds brackets around where clauses
$clauses = prepend_append_array_items($clauses, '(', ')');
$where_separator =
implode(
"\n ".$search['mode'].' ',
$clauses
);
$search_clause = $where_separator;
if (isset($forbidden))
{
$search_clause.= "\n AND ".$forbidden;
}
return $search_clause;
}
/**
* Returns webmaster mail address depending on $conf['webmaster_id']
*
* @return string
*/
function get_webmaster_mail_address()
{
global $conf;
$query = '
SELECT '.$conf['user_fields']['email'].'
FROM '.USERS_TABLE.'
WHERE '.$conf['user_fields']['id'].' = '.$conf['webmaster_id'].'
;';
list($email) = mysql_fetch_array(pwg_query($query));
return $email;
}
/**
* which upgrades are available ?
*
* @return array
*/
function get_available_upgrade_ids()
{
$upgrades_path = PHPWG_ROOT_PATH.'install/db';
$available_upgrade_ids = array();
if ($contents = opendir($upgrades_path))
{
while (($node = readdir($contents)) !== false)
{
if (is_file($upgrades_path.'/'.$node)
and preg_match('/^(.*?)-database\.php$/', $node, $match))
{
array_push($available_upgrade_ids, $match[1]);
}
}
}
natcasesort($available_upgrade_ids);
return $available_upgrade_ids;
}
/**
* returns a prefix for each url link on displayed page
* @return string
*/
function get_root_url()
{
global $page;
if ( isset($page['root_path']) )
{
return $page['root_path'];
}
return PHPWG_ROOT_PATH;
}
/**
* adds one or more _GET style parameters to an url
* example: add_url_param('/x', 'a=b') returns /x?a=b
* add_url_param('/x?cat_id=10', 'a=b') returns /x?cat_id=10&a=b
* @param string url
* @param string param
* @return string
*/
function add_url_param($url, $param)
{
$url .= ( strstr($url, '?')===false ) ? '?' :'&';
$url .= $param;
return $url;
}
/**
* build an index URL for a specific section
*
* @param array
* @return string
*/
function make_index_URL($params = array())
{
$url =
get_root_url().'category.php?'
.'/'.make_section_in_URL($params)
;
$url = add_well_known_params_in_url($url, $params);
return $url;
}
/**
* build an index URL with current page parameters, but with redefinitions
* and removes.
*
* duplicate_index_URL(array('category' => 12), array('start')) will create
* an index URL on the current section (categories), but on a redefined
* category and without the start URL parameter.
*
* @param array redefined keys
* @param array removed keys
* @return string
*/
function duplicate_index_URL($redefined = array(), $removed = array())
{
return make_index_URL(
params_for_duplication($redefined, $removed)
);
}
/**
* returns $page global array with key redefined and key removed
*
* @param array redefined keys
* @param array removed keys
* @return array
*/
function params_for_duplication($redefined, $removed)
{
global $page;
if (count($removed) > 0)
{
$params = array();
foreach ($page as $page_item_key => $page_item_value)
{
if (!in_array($page_item_key, $removed))
{
$params[$page_item_key] = $page_item_value;
}
}
}
else
{
$params = $page;
}
foreach ($redefined as $redefined_param => $redefined_value)
{
$params[$redefined_param] = $redefined_value;
}
return $params;
}
/**
* create a picture URL with current page parameters, but with redefinitions
* and removes. See duplicate_index_URL.
*
* @param array redefined keys
* @param array removed keys
* @return string
*/
function duplicate_picture_URL($redefined = array(), $removed = array())
{
return make_picture_URL(
params_for_duplication($redefined, $removed)
);
}
/**
* create a picture URL on a specific section for a specific picture
*
* @param array
* @return string
*/
function make_picture_URL($params)
{
if (!isset($params['image_id']))
{
die('make_picture_URL: image_id is a required parameter');
}
$url =
get_root_url().'picture.php?'
.'/'.$params['image_id']
.'/'.make_section_in_URL($params)
;
$url = add_well_known_params_in_url($url, $params);
return $url;
}
/**
*adds to the url the chronology and start parameters
*/
function add_well_known_params_in_url($url, $params)
{
if ( isset($params['chronology_field']) )
{
$url .= '/'. $params['chronology_field'];
$url .= '-'. $params['chronology_style'];
if ( isset($params['chronology_view']) )
{
$url .= '-'. $params['chronology_view'];
}
if ( !empty($params['chronology_date']) )
{
$url .= '-'. implode('-', $params['chronology_date'] );
}
}
if (isset($params['start']) and $params['start'] > 0)
{
$url.= '/start-'.$params['start'];
}
return $url;
}
/**
* return the section token of an index or picture URL.
*
* Depending on section, other parameters are required (see function code
* for details)
*
* @param array
* @return string
*/
function make_section_in_URL($params)
{
$section_string = '';
if (!isset($params['section']))
{
if (isset($params['category']))
{
$params['section'] = 'categories';
}
else if (isset($params['tags']))
{
$params['section'] = 'tags';
}
else if (isset($params['list']))
{
$params['section'] = 'list';
}
else if (isset($params['search']))
{
$params['section'] = 'search';
}
}
if (!isset($params['section']))
{
$params['section'] = 'categories';
}
switch($params['section'])
{
case 'categories' :
{
if (!isset($params['category']))
{
$section_string.= 'categories';
}
else
{
$section_string.= 'category/'.$params['category'];
}
break;
}
case 'tags' :
{
if (!isset($params['tags']) or count($params['tags']) == 0)
{
die('make_section_in_URL: require at least one tag');
}
$section_string.= 'tags';
foreach ($params['tags'] as $tag)
{
$section_string.= '/'.$tag;
}
break;
}
case 'search' :
{
if (!isset($params['search']))
{
die('make_section_in_URL: require a search identifier');
}
$section_string.= 'search/'.$params['search'];
break;
}
case 'list' :
{
if (!isset($params['list']))
{
die('make_section_in_URL: require a list of items');
}
$section_string.= 'list/'.implode(',', $params['list']);
break;
}
default :
{
$section_string.= $params['section'];
}
}
return $section_string;
}
?>