简单的 MySQL 搜索函数

A quick and simple way to search a MySQL database.
示例:
mysqlsearch('items', 'title tags', isset($GET['q'])?$GET['q']:'', Array('columns'=>'*', 'method'=>'OR', 'extrasql'=>'AND active = "true" ORDER BY id DESC'));

1. if (!function_exists('mysql_search')) {
3. function mysql_search($table, $columns, $query = '', $options = Array()) {
5. if (empty($query)) { return Array(); }
7. $sql_query = Array();
9. $options['columns'] = isset($options['columns'])?$options['columns']:'*';
10. $options['method'] = isset($options['method'])?$options['method']:'OR';
11. $options['extra_sql'] = isset($options['extra_sql'])?$options['extra_sql']:'';
13. $query = ereg_replace('[[:<:>:]]', '', $query);
14. $query = ereg_replace(' +', ' ', trim(stripslashes($query)));
16. $pattern = '/([[:alpha:]:]+)([[:alpha:] ]+)[[:alpha:]]?+[ ]?/i';
18. $regs = Array();
20. preg_match_all($pattern, $query, $regs);
22. $query = $regs[0];
24. while (list($key, $value) = @each($query)) {
26. $column = $columns;
27. $keywords = urldecode($value);
29. if (strpos($value, ':')) {
31. $column = substr($value, 0, strpos($value, ':'));
32. $keywords = trim(substr($keywords, strpos($keywords, ':') + 1));
33. $keywords = ereg_replace('\'', '', $keywords);
35. } else { $keywords = ereg_replace(' +', '|', $keywords); }
37. $column_list = explode(' ', $column);
39. $sql = Array();
41. for ($i = 0; $i
42. $query[$key] = Array('orignal'=>$value, 'sql'=>implode(' ' . $options['method'] . ' ', $sql));
44. $sql_query = array_merge($sql_query, $sql);
45. $sql_query = implode(' ' . $options['method'] . ' ', $sql_query);
47. }
49. $results = mysql_fetch_results(mysql_query('SELECT ' . $options['columns'] . ' FROM ' . $table . ' WHERE ' . $sql_query . ' ' . $options['extra_sql']));
51. return $results;
53. }
55. }

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