idea to format a query string
I am trying to make a query string
$sql = 'select * from table where '. $option1. $option2 etc
how would I go about making that. every query开发者_高级运维 will have different number of options. above have 2, but it could be as many as 10
thanks
You could hold these in an array for example. Something like:
$options = array('option1', 'option2', 'etc');
$sql = 'SELECT * FROM table WHERE ' . implode(' AND ', $options);
You could even compose the whole query with an array, depending on the things you need to change (what I mean is, only make the things you need to change configurable). For example:
$query = array(
'select' => 'SELECT *',
'from' => 'FROM table',
'where' => 'WHERE',
'conditions' => array('a = 2', '(b = 3) OR (c = 4)'));
/* ... */
if ($something_happens_that_needs_to_change_the_table) {
$query['from'] = 'FROM another_table';
}
/* ... other things that need to change the query somehow ... */
$query['conditions'] = implode(' AND ', $query['conditions']);
$query_to_count = $query;
$query_to_count['select'] = 'SELECT COUNT(*) AS total';
$query_to_count = implode(' ', $query_to_count);
$query = implode(' ', $query);
If you're using Cake, make an array of conditions and feed it to paginate
$conditions['Model.field1'] = somevalue;
$conditions['Model.field2 LIKE'] = '%what_ever%';
...... etc
$conditions['Model.field3'] = 36;
$search_result = $this->paginate('Model', $conditions);
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