PDO DSN generation failes when initStatement contains ;

[tomvlk]

Preconditions

1. Install Magento2 with setup (MySQL), don't change default initStatement.

Steps to reproduce

1. Edit the app/etc/env.php.
2. Change the order of the default db connection configuration.
3. Make sure that initStatement is the upper most entry.
4. Reload page or run CLI tool.

Expected result

1. Working site with selected DB.

Actual result

1. The DSN will contain the initStatement with ; sign. Resulting in:

mysql:host=localhost;model=mysql4;active=1;initStatements=SET NAMES utf8;;dbname=test_db;engine=innodb;type=pdo_mysql

The problem will be between the initStatements= and the dbname=. The dubble semicolon will result in ignoring everything after it.

By default the Magento setup will add initStatements with the semicolon on the end, which is the failt. The only reason why it isn't failing on all environments is order of the env.php array which will ignore nothing on the end of the generated DSN.

This affects Magento 2.1.1 and (not yet tested) everything < 2.1.1.

[sevos1984]

Why do you need to change order of configurations?

[tomvlk]

@sevos1984 Because there are deployment tools out there that use un-ordered lists (language limitations) and will output it in a random order. For such environments, it's possible to implement a workaround at the deployment side. But this is definitely a bug with the default value of the initStatements.

It's good configured in your tests (

magento2/lib/internal/Magento/Framework/Model/Test/Unit/ResourceModel/Type/Db/Pdo/MysqlTest.php

Line 57 in f2d309a

['host' => 'localhost', 'initStatements' => 'SET NAMES utf8', 'type' => 'pdo_mysql', 'active' => false],

) but in the default setup config it's including the semicolon which can, together with a different order, result in a exception.

[sevos1984]

Thanks for clarification, internal ticket created MAGETWO-58326

[magento-engcom-team]

@tomvlk, thank you for your report.
We've created internal ticket(s) MAGETWO-58326 to track progress on the issue.