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new method query_list to return an array with one column as key and an other one as value, eg. for option-lists

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Ralf Becker 2005-05-10 14:44:34 +00:00
parent dee6d75828
commit ba85974cef
1 changed files with 34 additions and 0 deletions
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34
etemplate/inc/class.so_sql.inc.php
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@ -612,4 +612,38 @@ class so_sql
}
return 0;
}
/**
* Query DB for a list / array with one colum as key and an other one as value, eg. id => title pairs
*
* We do some caching as these kind of function is usualy called multiple times, eg. for option-lists.
*
* @param string $value_col column-name for the values of the array, can also be an expression aliased with AS
* @param string $key_col='' column-name for the keys, default '' = same as $value_col: returns a distinct list
* @param array $filter=array() to filter the entries
* @return array with key_col => value_col pairs, ordered by value_col
*/
function query_list($value_col,$key_col='',$filter=array())
{
static $cache = array();
$cache_key = $value_col.'-'.$key_col.'-'.serialize($filter);
if (isset($cache[$cache_key]))
{
return $cache[$cache_key];
}
if (($search =& $this->search(array(),($key_col ? $key_col.',' : 'DISTINCT ').$value_col,$value_col,'','',false,'AND',false,$filter)))
{
if (preg_match('/AS ([a-z_0-9]+)$/i',$value_col,$matches))
{
$value_col = $matches[1];
}
foreach($search as $row)
{
$ret[$row[$key_col ? $key_col : $value_col]] = $row[$value_col];
}
}
return $cache[$cache_key] =& $ret;
}
}