Where子句中的PHP变量字符串为空

Question

echo "row->name = '$row->name'"; //prints name correctly

我的字段名称

$next_row = db_query("select * from field_data_field_department d join taxonomy_term_data t on d.field_department_tid = t.tid where d.entity_id = $entityID and t.name = '$row->name'");

返回未找到的列：1054未知列＆＃39;我的字段名称＆＃39;在where子句＆＃39;＆＃39;

如果我在MariaDB中运行查询，那么

select * from field_data_field_department d join taxonomy_term_data t on d.field_department_tid = t.tid where d.entity_id = 10568 and t.name = 'Name of my field';

Answer 1

可能与您访问对象的事实有关

（一定要避免sql注入）并尝试使用concat

  $next_row = db_query("select * 
          from field_data_field_department d 
          join taxonomy_term_data t on d.field_department_tid = t.tid 
          where d.entity_id = $entityID and t.name = '" . $row->name ."'");