blocks|key|2332496|text|你试过这个吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2332497|$names+=+array(4,5);
$this->db->where_in('id',+$names);
$this->db->delete('mytable');|code-block|syntax|javascript|2332498|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Have you tried this ?

<pre><code>$names = array(4,5);
$this-&gt;db-&gt;where_in('id', $names);
$this-&gt;db-&gt;delete('mytable');
</code></pre>

blocks|key|2332511|text|不需要关联数组。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2332512|$ids[]+=+1;
$ids[]+=+2;

$this->db->where_in(+id,+$ids+);
$this->db->delete('Table_Name');|code-block|syntax|javascript|2332513|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

not need of associative array.

<pre><code>$ids[] = 1;
$ids[] = 2;

$this-&gt;db-&gt;where_in( id, $ids );
$this-&gt;db-&gt;delete('Table_Name');
</code></pre>

blocks|key|1316750|text|为它编写自定义查询|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1316751|$this->db->query("DELETE+FROM+`TABLE_NAME`+WHERE+`id`+IN(1,2,3,4,5)");|code-block|syntax|javascript|1316752|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

write custom query for it 

<pre><code>$this-&gt;db-&gt;query("DELETE FROM `TABLE_NAME` WHERE `id` IN(1,2,3,4,5)");
</code></pre>

blocks|key|530269|text|这不是工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|530270|$names+=+array(4,5);
$this->db->where_in('id',+$names);
$this->db->delete('mytable');

DELETE+FROM+table_name+WHERE+id+IN+('4,5')|code-block|syntax|javascript|530271|注意一件事，不是单字符串/数字('4,5')，我们应该像这样用单引号('4'，'5')来区分每个id。|530272|最好最好的方法|530273|++++++++//$ids+=+1,2,3.....
++++++++$ids_exp+=+explode(',',$ids);
++++++++$this->db->where_in('id',$ids_exp);//
++++++++$this->db->delete('table_name')
++++++++return+$this->db->affected_rows();|530274|上述查询将为work+..........|530275|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

it is not work 

<pre><code>$names = array(4,5);
$this-&gt;db-&gt;where_in('id', $names);
$this-&gt;db-&gt;delete('mytable');

DELETE FROM table_name WHERE id IN ('4,5')
</code></pre>

notice one thing not single string/digit ('4,5') we should be dived each and every id with single quotation like this ('4','5')

The best and good way

<pre><code> //$ids = 1,2,3.....
 $ids_exp = explode(',',$ids);
 $this-&gt;db-&gt;where_in('id',$ids_exp);//
 $this-&gt;db-&gt;delete('table_name')
 return $this-&gt;db-&gt;affected_rows();
</code></pre>

the above query will be work enjoy..........

blocks|key|2168051|text|要删除单个使用行，请执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2168052|$this->db->delete('TABLE_NAME',+array('id'+=>+5));|code-block|syntax|javascript|2168053|你试过这样做吗？我很确定它应该行得通。|2168054|$this->db->delete('TABLE_NAME',+array(array('id'+=>+5),+array('id'+=>+3),+...));|2168055|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

To delete a single use row:

<pre><code>$this-&gt;db-&gt;delete('TABLE_NAME', array('id' =&gt; 5));
</code></pre>

Have you tried doing this? I'm pretty sure it should work.

<pre><code>$this-&gt;db-&gt;delete('TABLE_NAME', array(array('id' =&gt; 5), array('id' =&gt; 3), ...));
</code></pre>

blocks|key|2336062|text|这是一个古老的问题，但我会回答它，因为我不得不在8年后研究同样的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2336063|我检查了$wpdb->delete()的源代码，它基本上只会删除1行。它的工作方式是将1列与1+val进行匹配，然后与AND连接。因此，如果您使用array("id"=>4,"id"=>5)，它将以行的形式读取(id==4和id==5)。任何行都不会与该条件匹配。|offset|length|style|CODE|2336064|因此，要删除多个行，唯一的方法(据我所见)是使用自定义查询：|2336065|$wpdb->query("DELETE+FROM+`TABLE_NAME`+WHERE+`id`+IN(1,2,3,4,5)");|code-block|syntax|javascript|2336066|entityMap^0|0|4|F|21|M|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]|$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|X|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

This is an old question, but I'll answer it since I had to research the same question 8 years later.
I checked the source code of <code>$wpdb-&gt;delete()</code>, and it will basically only delete 1 row. It works by matching 1 col to 1 val, and then joining with AND. So if you do <code>array(&quot;id&quot;=&gt;4,&quot;id&quot;=&gt;5)</code>, it will read it as row with (id==4 AND id==5). No rows will match that condition.
So to delete multiple rows, the only way (as far as i've seen) is to use a custom query:
<pre><code>$wpdb-&gt;query(&quot;DELETE FROM `TABLE_NAME` WHERE `id` IN(1,2,3,4,5)&quot;);
</code></pre>

So I can delete one row using:

<pre><code>$this-&gt;db-&gt;delete($tableName,array("id"=&gt;4));
</code></pre>

...but I can't figure out how to delete multiple rows. I tried:

<pre><code>$this-&gt;db-&gt;delete($tableName,array("id"=&gt;4,"id"=5));
</code></pre>

as well as:

<pre><code>$this-&gt;db-&gt;delete($tableName,array(array("id"=&gt;4),array("id"=5)));
</code></pre>

...but they both don't work. I feel like this should be pretty easy. Any answers?

How to delete multiple rows?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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因此，我可以使用以下命令删除一行：$this->db->delete($tableName,array("id"=>4));...but我想不出怎么删除多行。我试过了：$this->db->delete($tableName,array("id"=>4,"id"=5));以及：$this->db->delete($tableName,array(array("id"=>4),array("id"=

问如何删除多行？
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