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mysqli的4fetch以及设置指针的方法查看全部
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客户端设置编码方式查看全部
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MySQLi验证是否已经开启查看全部
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MySQLicense扩展安装查看全部
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mysqli扩展或者pdo操作数据库来代替mysql扩展 1.mysqli可以面向对象或者面向过程 2.支持预处理语句 3.支持事物 mysqli速度也更快一些。查看全部
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MySQLi优势查看全部
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验证扩展是否开启查看全部
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//mysqli_func.php <?php //1.连接 $link = mysqli_connect(‘localhost’,’root’,’root’,’test’) or die(‘Connect Error:’.mysqli_connect_errno().”:”.mysqli_connect_error()); //2.编码 mysqli_set_charset($link,’UTF8’); //3.查询 $sql=“INSERT user(username,password,age) VALUES(‘a’,’a’,11);”; $res=$mysqli_query($link,$sql); if($res){ echo ‘AUTO_INCREAMENT:’.$mysqli_insert_id($link); echo ‘<hr/>’; echo ‘AFFECTED_ROWS:’.$mysqli_affected_rows($link); }else{ echo ‘ERROR:<br/>’; echo mysqli_errno($link).”:”.mysqli_error($link); } print_r($link); ?>查看全部
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<?php header('content-type:text/html;charset=utf-8'); $mysqli = new mysqli('localhost','root','root','test'); if($mysqli->connect_errno){ die($mysqli->connect_error); } $mysqli->set_charset('utf8'); //关闭自动提交功能 $mysqli->autocommit(FALSE); $sql = "UPDATE account SET money = money-200 WHERE username = 'king'"; $res1 = $mysqli->query($sql); $res1_rows = $msyqli->affected_rows; $sql2 = "UPDATE account SET money = money+200 WHERE username = 'queen'"; $res2 = $mysqli->query($sql2); $res2_rows = $mysqli->affected_rows; if($res1 && $res1_rows>0 && $res2 && $res2_rows>0){ //提交 $msyqli->commit(); echo 'success'; $mysqli->autocommit(TRUE); } else{ //事务回滚 $mysqli->rollback(); echo 'fail'; } $mysqli->close(); ?>查看全部
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1.面向对象。 2.面向过程。查看全部
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trim过滤函数查看全部
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预处理语句中的数据类型： s:字符串 i:整型 d:浮点型查看全部
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mysqli扩展或者pdo操作数据库来代替mysql扩展 1.mysqli可以面向对象或者面向过程 2.支持预处理语句 3.支持事物 mysqli速度也更快一些。查看全部
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<?php header('content-type:text/html;charset=utf-8'); $mysqli = new mysqli('localhost','root','root','test'); if($mysqli->connect_errno){ die($mysqli->connect_error); } $mysqli->set_charset('utf8'); //关闭自动提交功能 $mysqli->autocommit(FALSE); $sql = "UPDATE account SET money = money-200 WHERE username = 'king'"; $res1 = $mysqli->query($sql); $res1_rows = $msyqli->affected_rows; $sql2 = "UPDATE account SET money = money+200 WHERE username = 'queen'"; $res2 = $mysqli->query($sql2); $res2_rows = $mysqli->affected_rows; if($res1 && $res1_rows>0 && $res2 && $res2_rows>0){ //提交 $msyqli->commit(); echo 'success'; $mysqli->autocommit(TRUE); } else{ //事务回滚 $mysqli->rollback(); echo 'fail'; } $mysqli->close(); ?>查看全部
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<?php header('content-type:text/html;charset=utf-8'); $mysqli = new mysqli('localhost','root','root','test'); if($mysqli->connect_errno){ die($mysqli->connect_error); } $mysqli->set_charset('utf8'); $sql = "select userid,username,userjob from user where userid >=?"; $mysqli_stmt = $mysqli->prepare($sql); $id = 20; $mysqli_stmt->bind_param('i',$id); if($mysqli_stmt->excute() ){ //bind_result()绑定结果集中的值到变量 $mysqli_stmt->bind_result($id, $name, $job); while($msyqli_stmt->fetch() ){ //通过fetch()遍历结果集 echo 'ID'.$id.'<br/>'; echo '昵称'.$name.'<br/>'; echo '身份'.$job.'<br/>'; echo '<hr/>'; } } $mysqli_stmt->free_result(); $mysqli_stmt->close(); $mysqli->close(); ?>查看全部
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