如何在数组中搜索？关于下面的案例（c），请提出建议并提出建议。
我不明白我的错误在哪里。我尝试以几种方式在数组中搜索Doctrine列关键字。下面的代码用于调试目的，查询本身在下面的例子中描述。
public function findWhereKeyw($searchArr)
{
print_r('<br> searchstr = '); print_r($searchstr); print_r('</pre>');
print_r('<br> searchstr explode = '); print_r( explode(",",$searchstr) ); print_r('</pre>');
print_r('<br> searchArr implode = '); print_r( implode(",", $searchArr) ); print_r('</pre>');
//searchstr = opera, some
//searchstr explode = Array ( [0] => opera [1] => some )
//searchArr implode = opera,some
$query = ...//see cases below
$qsql=$query->getSQL();
$param=$query->getParameters();
print_r('<br>q= <pre>'); print_r($qsql); print_r('</pre>');
print_r('<br>p= <pre>'); print_r($param); print_r('</pre>');
try {
return $query->getResult();
//return $query->getSingleResult();
} catch (\Doctrine\ORM\NoResultException $e) {
return null;
}
a）通过这种方式我收到错误"Invalid parameter format, ? given, but :<name> or ?<num> expected."
$query = $this->getEntityManager()->createQuery(
'SELECT e.id, e.title FROM MeetingBundle:Event e WHERE e.keywords IN (?)',
explode(",",$searchstr) , array(\Doctrine\DBAL\Connection::PARAM_STR_ARRAY));
OR
$query = $this->getEntityManager()->createQuery(
'SELECT e.id, e.title FROM MeetingBundle:Event e WHERE e.keywords IN (?),
array( array( '.implode(", ",$searchArr).' ) ),
array(\Doctrine\DBAL\Connection::PARAM_STR_ARRAY)'
);
b）这样，我得到空数组：
$qsrtr= 'SELECT e.id, e.title FROM MeetingBundle:Event e WHERE e.keywords IN (';
foreach ($searchArr as $val) {
$qsrtr.= ':'.$val.', ';
}
$qsrtr=rtrim($qsrtr, ", ");
$qsrtr.=')';
print_r('<br> qsrtr= </pre>'); print_r($qsrtr); print_r('</pre>');
$query = $this->getEntityManager()->createQuery( $qsrtr);
foreach ($searchArr as $val) {
$query->setParameter( $val, $val );
//OR $query->setParameter( ':'.$val, $val ); //this line gives also empty array, and the same parameteres object (p) as line above.
} //gives empty array as the result
打印结果：
qsrtr= SELECT e.id, e.title FROM MeetingBundle:Event e WHERE e.keywords IN (:opera, :some)
q= SELECT e0_.id AS id_0, e0_.title AS title_1 FROM event e0_ WHERE e0_.keywords IN (?, ?)
p= Doctrine\Common\Collections\ArrayCollection Object
(
[elements:Doctrine\Common\Collections\ArrayCollection:private] => Array
(
[0] => Doctrine\ORM\Query\Parameter Object
(
[name:Doctrine\ORM\Query\Parameter:private] => opera
[value:Doctrine\ORM\Query\Parameter:private] => opera
[type:Doctrine\ORM\Query\Parameter:private] => 2
)
[1] => Doctrine\ORM\Query\Parameter Object
(
[name:Doctrine\ORM\Query\Parameter:private] => some
[value:Doctrine\ORM\Query\Parameter:private] => some
[type:Doctrine\ORM\Query\Parameter:private] => 2
)
)
)
从查询（q）和参数（p）决定我应该能够找到关键字“opera”的事件。哪里可能是个错误。关键字字段是以逗号分隔的字符串。
答案 0 :(得分：0)
这不是回答如何使用WHERE进行搜索.IN。但它有点转向使用LIKE，实际上事件比WHERE-IN好得多。
简而言之：
$events = $em->createQuery( 'SELECT e FROM MeetingBundle:Event e WHERE e.'.$colname.' LIKE :keyw' )
->setParameter('keyw', '%'.$val.'%')
->getResult(\Doctrine\ORM\AbstractQuery::HYDRATE_ARRAY);
代码必须被重新分解为EventRepository和EventManager。 C：\ Bitnami \ wampstack-5.5.30-0 \ sym_prog \ proj2_27 \ SRC \ MeetingBundle \控制器\ EventController.php
/**
* Search Event entities.
*
* @Route("/search", name="event_search")
* @Method("GET|POST")
* @Template("MeetingBundle:Event:ev_search.html.twig")
*/
public function searchAction(Request $request)
{
$post = Request::createFromGlobals();
$em = $this->getDoctrine()->getManager();
if ($post->request->has('submit')) {
$searchstr=$post->request->get('search_words');
$searchArr = $this->multiExplode( [' ',',',';','-'], $searchstr);
//print_r('searchArr before trim = </pre>'); print_r($searchArr); print_r('</pre>');
foreach ($searchArr as $index => $value) {
if(strlen(trim($value))==0){
unset($searchArr[$index]);
}
}
print_r('searchArr after trim = </pre>'); print_r($searchArr); print_r('</pre>');
$borstatus=$post->request->get('search_or_ck');
$bor = ($borstatus === 'on' ) ? 1 : 0;
$bandstatus=$post->request->get('search_and_ck');
$band = ($bandstatus === 'on' ) ? 1 : 0;
$bkeyw=$post->request->get('search_keyw'); // check in which table columns to perform search
$bkeywstatus = ($bkeyw === 'on' ) ? 1 : 0;
$btitle=$post->request->get('search_title');
$btitlestatus = ($btitle === 'on' ) ? 1 : 0;
$bdescr=$post->request->get('search_descr');
$bdescrstatus = ($bdescr === 'on' ) ? 1 : 0;
//dump($post);
print_r('<pre>'); print_r($post); print_r('</pre>');
print_r('********************** bkeyw = '); print_r($bkeyw); print_r('<br>');
print_r('********************** bkeyw = '); print_r($bkeywstatus); print_r('<br>');
$result=array(); //result['colname']=array( 'opera'=> [ '27' => (id='27', title='x',..), '24'=>(),.....]
foreach ($colnameArr as $colname){
$keywArr=array(); //keywArr['opera']= [ '27' => (id='27', title='x',..), '24'=>(),.....]
foreach ($searchArr as $val) {
$events = $em->createQuery( 'SELECT e FROM MeetingBundle:Event e WHERE e.'.$colname.' LIKE :keyw' )
->setParameter('keyw', '%'.$val.'%')
->getResult(\Doctrine\ORM\AbstractQuery::HYDRATE_ARRAY);
// $res = $em->getResult(); does not work
// $res without HYDRATE_ARRAY returns long object, but on this object getId() is not working
// print_r('<br>*******************result <pre>'); print_r($events); print_r('</pre>');// very long object
$identArr=array();//$identArr[ '27'] = (id='27', title='x',..)
foreach ($events as $event){
//print_r('<br>*******************result <pre>'); print_r($event'id'); print_r('</pre>');//using ->getResult(\Doctrine\ORM\AbstractQuery::HYDRATE_ARRAY);
// print_r('<br>*******************EVENT <pre>'); print_r($event.getId()); print_r('</pre>');// using ->getResult();
// print_r('<br>*******************EVENT <pre>'); print_r($event); print_r('</pre>');// very long object //using ->getResult();
$id = $event['id'];
// all results are unique, because id are unique
$identArr[strval($id)]=$event ; //$identArr[ '27'] = (id='27', title='x',..)
}//foreach ($events as $event)
$keywArr[$val]=$identArr; //keywArr['opera']= [ '27' => (id='27', title='x',..), '24'=>(),.....]
unset($identArr);
}//foreach ($searchArr as $val) {
$result[$colname] = $keywArr; //result['colname']=array( 'opera'=> [ '27' => (id='27', title='x',..), '24'=>(),.....]
unset($keywArr);
} //foreach ($colnameArr as $colname){
// than you have to analyse result, to extract events for cases use selected: OR search, AND search, OR search only in certain columns, AND search only in certain columns... This will give finalArray
return array ('res'=>finalArray, )
}
答案 1 :(得分：0)
如果我理解得很好，你就是想用DQL做一个IN。这是语法：
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mysqld according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
我认为您的字段关键字只包含一个关键字。