php中PDO方式实现数据库的增删改查(2)

header("Content-type: text/html; charset=utf-8"); define('APP_DIR', dirname(__FILE__)); if (function_exists('spl_autoload_register')) { spl_autoload_register('autoClass'); } else { function __auto_load($className){ autoClass($className); } } function autoClass($className){ try{ require_once APP_DIR.'/class/'.$className.'.php'; } catch (Exception $e) { die('Error:' . $e->getMessage() . '<br />'); } } $DB = new DB(); //插入 $inData['a'] = rand(1, 100); $inData['b'] = rand(1, 1000); $inData['c'] = rand(1,200) . '.' . rand(1,100); $ret = $DB->insert('a', $inData); echo '插入' . ($ret ? '成功' : '失败') . '<br/>'; //更新 $upConData['a'] = 100; $upConJudge['a'] = '<'; $upConData['b'] = 30; $upConJudge['b'] = '>'; list($upConStr, $mapUpConData) = $DB->FDField('b', 200, '<', 'gt'); $condition = array( 'str' => $upConStr, 'data' => $upConData, 'judge' => $upConJudge, 'link' => 'and' ); $upData['a'] = rand(1, 10); $upData['b'] = 1; $upData['c'] = 1.00; $changeRows = $DB->update('a', $upData, $condition, $mapUpConData); echo '更新行数:' . (int) $changeRows . '<br/>'; //删除 $delVal = rand(1, 10); list($delCon, $mapDelCon) = $DB->FDField('a', $delVal); $delRet = $DB->delete('a', $delCon, $mapDelCon); echo '删除a=' . $delVal . ($delRet ? '成功' : '失败') . '<br/>'; //查询 $data['a'] = '10'; $judge['a'] = '>'; $data['b'] = '400'; $judge['b'] = '<'; list($conSql, $mapConData) = $DB->FDFields($data, 'and', $judge); $mData = $DB->fetch('select * from a where ' . $conSql . ' order by `a` desc', $mapConData); var_dump($mData);