PDO参数化查询

本文介绍了PDO参数化查询-重用命名的占位符?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

从本质上讲，我有一个必须在SQL查询中多次调用的值.因此，可以在语句中重用相同的命名占位符，例如 SELECT :Param FROM Table WHERE Column = :Param，然后只需bindValue(:Param")，并为两个:Params提供值?

In essence, I have a value that I have to call a couple times in my SQL query. Thus, is it possible to reuse the same named placeholder in the statement e.g. SELECT :Param FROM Table WHERE Column = :Param, then simply bindValue(":Param"), and have the value be there for both :Params?

推荐答案

PDO :: prepare 指出您不能在准备好的语句中两次使用相同名称的命名参数标记"，所以我想那是不可以的.

PDO::prepare states that "you cannot use a named parameter marker of the same name twice in a prepared statement", so I guess that's a no then.