PDO 'LIKE' 查询

问题描述

由于我刚开始使用 PDO 并且在偏离简单的 select from 查询时遇到问题，我想我最好在这里询问.

Since I'm new to using PDO and running into a problem when deviating from a simple select from query, I figured I'd best ask around here.

代码:

  $sDbase = str_replace('`', '', $modx->db->config['dbase']);
  $oPdo = new PDO("mysql:host=localhost;dbname=" . $sDbase . ";",   $modx->db->config['user'], $modx->db->config['pass']);
  $oPdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

  if(isset($_POST["search"]))
  {
    $sSearch = (!empty($_POST["search"])) ? mysql_real_escape_string($_POST["search"]) : "" ;
  }

  $sSearch = 'beer' ;

  $sQry = <<< QRY
    SELECT
      contentid AS standid
      ,value AS found
      ,pagetitle
      ,published
    FROM 
      modx_site_tmplvar_contentvalues
    RIGHT JOIN
      modx_site_content
      ON
      modx_site_content.id = modx_site_tmplvar_contentvalues.contentid
    WHERE
      ( tmplvarid = 41 OR tmplvarid = 40 )
    AND
      (value LIKE '%:search%'
      OR
      pagetitle LIKE '%:search%')
    AND
      published = '1'
    ORDER BY
      pagetitle
    ASC
QRY;

  $oRes = $oPdo->prepare( $sQry );
  $oRes -> bindParam( ":search", $sSearch );
  $oRes -> execute() ;

  $aRow = $oRes->fetchAll();
  $oRes -> closeCursor();


  var_dump($aRow);

变量 $sSearch 是我想在查询中绑定到 :search 的.对于这个例子，我已经在其中设置了一个值，但显然我想用一个 POST 变量替换它，这就是我首先要使用 PDO 的原因.

The variable $sSearch is what I want to bind to :search in the query. For this example, I've set a value in it, but obviously I want to replace that with a POST variable which is why I want to use PDO in the first place.

但是，该查询已经用 $sSearch 替换为一些搜索值进行了测试并且可以正常工作，但是现在我已经使用 PDO 执行相同的查询，并且得到一个空白结果.嗯，真的是一个空数组.

However, the query has been tested with $sSearch replaced by some searchvalue and works, but now I've used PDO to perform the same query, and I get a blank result. Well, an empty array really.

那么我在这里错过了什么?

So what am I missing here?

推荐答案

根据 Amelia 的评论，答案如下:

Per Amelia’s comment, here is the answer:

$sSearch = '%bier%' ;

和

value LIKE :search

成功了.

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