我试图解析SQL结果集,但遇到了多个问题。
foreach ( $rows as $key => $row ) {
die(print(gettype( $row ))); // DIE 1
if ( is_array( $row ) ) {
foreach ( (array)$row as $k => $r ) {
die(print_r($r)); // DIE 2
if ( !in_array( $r['proposal'], $proposals ) ) {
array_push( $proposals, $r['proposal'] );
}
if ( !in_array( $r['question'], $scorequestions ) && $r['type'] == 'score' ) {
array_push( $scorequestions, $r['question'] );
}
if ( !in_array( $r['question'], $recommendquestions ) && $r['type'] == 'recommend' ) {
array_push( $recommendquestions, $r['question'] );
}
}
}
}
我的$行是:(https://i.stack.imgur.com/KWdgt.jpg)
+----------+--------+----------+-----------+----------+---------+-----------+-------------+------+
| question | title | campaign | type | proposal | avg | recommend | conditional | cnt |
+----------+--------+----------+-----------+----------+---------+-----------+-------------+------+
| 101 | Title1 | 104 | score | 38 | 6.6667 | 0 | 0 | 3 |
| 101 | Title2 | 104 | score | 39 | 9.6667 | 0 | 0 | 3 |
| 101 | Title3 | 104 | score | 40 | 8.0000 | 0 | 0 | 2 |
| 101 | Title4 | 104 | score | 41 | 3.0000 | 0 | 1 | 2 |
| 101 | Title5 | 104 | score | 42 | 9.0000 | 0 | 0 | 1 |
| 101 | Title6 | 104 | score | 43 | 9.0000 | 0 | 0 | 1 |
| 101 | Title7 | 104 | score | 44 | 7.6667 | 0 | 0 | 3 |
$rows是一个SQL结果集。DIE 1 print告诉我$row是一个数组,但is_array()函数认为它不是数组。
如果我跳过If循环(注释掉)并运行foreach内部循环,DIE 2会给我:
Array ( [question] => 105 [campaign] => 104 [type] => recommend [proposal] => 42 [avg] => -1.0000 [recommend] => 1 [conditional] => 1 [cnt] => 1 [title] => Title5 [amount] => 300 [theme] => offline ) 1
但后来我在$r上得到了一个非法的字符串偏移错误。不确定我哪里错了。在发布这篇文章之前,我已经阅读了多个SO线程。
您直接在$rows上迭代,而$rows是一个具有$rows成员的对象,该成员保存实际数据。因此,您应该在外循环中对$rows->行进行迭代。