从 PDO 准备好的语句中检索(或模拟)完整查询

问题描述

我在两年前偶然发现了这个问题.

I stumbled upon this question from two years ago.

有没有办法在准备好的语句上调用 PDOStatement::execute() 时执行原始 SQL 字符串?出于调试目的，这将非常有用.

Is there a way to get the raw SQL string executed when calling PDOStatement::execute() on a prepared statement? For debugging purposes this would be extremely useful.

获胜答案指出

[...] 你也可以得到你想要的设置 PDO 属性PDO::ATTR_EMULATE_PREPARES.在这模式，PDO 将参数插入到SQL查询并发送整个执行时查询.

[...] You can also get what you want if you set the PDO attribute PDO::ATTR_EMULATE_PREPARES. In this mode, PDO interpolate parameters into the SQL query and sends the whole query when you execute().

但它没有提到如何获取结果查询字符串.我知道在性能方面这是一个坏主意，但这在调试模式下不会打扰我.有人知道怎么做吗?

But it doesn't mention how to get the resulting query string. I know it's a bad idea performance wise but that doesn't bother me in debug mode. Does anybody know how to do this?

PS 如果有什么办法可以让我重新打开/引起人们对原来两年前的话题的关注而不是打开一个新话题，请告诉我.

推荐答案

我相信这是在这个问题中引用的原始问题中提到的.然而实际上应该有一种方法来检索这些数据.

I believe this is mentioned in the original question that was reference in this one. However there is actually supposed to be a method for retrieving this data.

PDOStatement::debugDumpParams

然而，它目前并没有按照文档工作.这里有一个错误报告和补丁提交给它http://bugs.php.net/bug.php?id=52384 以防有人对它感兴趣.在修复之前，您似乎只能使用查询日志记录或使用 PDO::ATTR_STATEMENT_CLASS 属性设置自定义语句类.

However it isn't currently working as documented. There is a bug report and patch submitted for it here http://bugs.php.net/bug.php?id=52384 in case anyone is interested in voting on it. Until it's fixed it seems like you are left to use query logging or setting a custom statement class using the PDO::ATTR_STATEMENT_CLASS attribute.

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