表格上的PHP PDO查询错误具有json数据类型(MySQL 5.7.8-rc)

问题描述

我正在mysql 5.7上尝试新的json数据类型.当我使用本机php mysql查询时，它工作正常，但是当我使用PDO查询数据时，它显示此错误:

I'm trying new json datatype on mysql 5.7. When I use native php mysql query, it works fine, but when I use PDO to query data, it shows this error:

你们知道如何解决这个问题吗?

Do you guys know how to solve this problem ?

谢谢.

使用我的简单测试代码进行更新:

Update with my simple test code:

<?php

try{
    $db = new PDO('mysql:host=some.host;dbname=somedb;charset=utf8', 'user', 'pwd');
    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
}catch(PDOException  $e){
    echo "Error1: ".$e;
}

try{
    $query = $db->query("select * from table_with_json_type");

}catch(PDOException $e){
    echo "Error2: ".$e;
}
?>

推荐答案

这是向PHP开发人员报告的错误#70384

It's a Bug reported to PHP Developers #70384

开发者[email protected]刚刚发布:

The developer [email protected] just posted:

源快照每三个小时打包一次；这个变化 将在下一个快照中.您可以在以下位置获取快照 http://snaps.php.net/.

Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/.

对于Windows:

http://windows.php.net/snapshots/感谢您的报告，以及为了 帮助我们改善PHP.

http://windows.php.net/snapshots/ Thank you for the report, and for helping us make PHP better.

已在PHP-5.6.19，PHP-7.0和主版(PHP-7.1)中修复

Fixed in PHP-5.6.19, PHP-7.0 and master (PHP-7.1)

感谢您的举报

因此，PHP 5.6.19+将支持JSON数据类型对于其他版本，上面提供了一种解决方法.

So, the JSON data type will be supported on PHP 5.6.19+For other version there is a workaround available above.

此解决方法将具有CAST功能的JSON字段修改为CHAR，从PHP的角度来看，这很好:例如:

This workaround modify the JSON field with CAST feature to a CHAR, which is fine from PHP's perspective:Eg.:

select *, CAST(json_col as CHAR) as json_col from table_with_json_type

在所有情况下都对我有用.

It's worked to me in all cases.

要完全兼容，您必须使用PHP-5.6.19 +

To Full compatibility you must use PHP-5.6.19+

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