<?php $mysqli=new mysqli("localhost", "root", "123456", "xsphpdb"); if(mysqli_connect_errno()){ echo "错误:".mysqli_connect_error(); exit; } //执行select语句,返回来的就是结果集(对象) $sql="select id cid, name shopname, price shopprice, num shopnum, desn shopdesn from shops"; $result=$mysqli->query($sql); $rows=$result->num_rows; $cols=$result->field_count; echo "表中{$rows}行,{$cols}列<br>"; //记录信息 /* $result->fetch_row() ---- mysql_fetch_row() 索引数组 * $result->fetch_assoc() --- mysql_fetch_assoc() 关联数组(下标就是列名) * $result->fetch_array() ---- mysql_fetch_array() 两个数组都返回(MYSQLI_ASSOC, MYSQLI_NUM,MYSQLI_BOTH(default)) * $result->fetch_object() --- mysql_fetch_object() * * 每次执行一次,就会从结果集中取出当前一条记录(当前记录就是第一个行,可以使用data_seek(5)) * * 指针指向下一行,下次再取时,就会取出下一行,当结果集中没有记录时,则返回false * */ echo '<table border=1 align="center" width=900>'; echo '<tr>'; // $result->field_seek(2); while($field=$result->fetch_field()){ echo '<th>'.$result->current_field.'_['.$field->orgname.']'.$field->name.'('.$field->max_length.')</th>'; } echo '</tr>'; // $result->data_seek(50); while($row=$result->fetch_assoc()){ echo '<tr>'; foreach($row as $col){ echo '<td>'.$col.'</td>'; } echo '</tr>'; } echo '</table>'; $result->free(); $mysqli->close();