一个基本的php查询mysql数据库的函数
if (!function_exists('mysql_search')) { function mysql_search($table, $columns, $query = '', $options = Array()) { if (empty($query)) { return Array(); } $sql_query = Array(); $options['columns'] = isset($options['columns'])?$options['columns']:'*'; $options['method'] = isset($options['method'])?$options['method']:'OR'; $options['extra_sql'] = isset($options['extra_sql'])?$options['extra_sql']:''; $query = ereg_replace('[[:<:]](and|or|the)[[:>:]]', '', $query); $query = ereg_replace(' +', ' ', trim(stripslashes($query))); $pattern = '/([[:alpha:]:]+)([[:alpha:] ]+)[[:alpha:]]?+[ ]?/i'; $regs = Array(); preg_match_all($pattern, $query, $regs); $query = $regs[0]; while (list($key, $value) = @each($query)) { $column = $columns; $keywords = urldecode($value); if (strpos($value, ':')) { $column = substr($value, 0, strpos($value, ':')); $keywords = trim(substr($keywords, strpos($keywords, ':') + 1)); $keywords = ereg_replace('\'', '', $keywords); } else { $keywords = ereg_replace(' +', '|', $keywords); } $column_list = explode(' ', $column); $sql = Array(); for ($i = 0; $i < count($column_list); $i++) { $sql[] = '' . $column_list[$i] . ' REGEXP "' . $keywords . '"'; } $query[$key] = Array('orignal'=>$value, 'sql'=>implode(' ' . $options['method'] . ' ', $sql)); $sql_query = array_merge($sql_query, $sql); $sql_query = implode(' ' . $options['method'] . ' ', $sql_query); } $results = mysql_fetch_results(mysql_query('SELECT ' . $options['columns'] . ' FROM ' . $table . ' WHERE ' . $sql_query . ' ' . $options['extra_sql'])); return $results; } }