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Wesley Murch
Asked: 2013-12-20 21:09:59 +0800 CST

Why are these two PDO classes different (and how can I make them the same)?

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I have a web-based PHP email client (Roundcube) that I installed on a UNIX server, and right off the bat it produced this error:

Fatal error: Undefined class constant 'MYSQL_ATTR_FOUND_ROWS' in /path/to/file.php on line 134

It's this line of code:

$result[PDO::MYSQL_ATTR_FOUND_ROWS] = true;

Locally on my Windows installation it works fine, so I compared the two PDO classes with this:

<?php ReflectionClass::export('PDO');

The MYSQL_ATTR_FOUND_ROWS property and some others weren't present on the live UNIX server. I did a quick patch by hardcoding the unknown value and it worked great, but I can't be sure there aren't more bugs (and we don't want to use a hacked version anyways).

The PDO class is definitely loaded, we actually needed to enable it in order to install Roundcube with the MySQL/PDO option in the first place. It seems like the live server's PDO class needs to be updated, I'm guessing? I do not have direct control over the live server, but I can give instructions to the guy who does. Can anyone help me figure out what must be done?

Here are the stats:

Local Windows Apache Server (working), PHP Version 5.3.8

PDO class debug output:

Class [ <internal:PDO> class PDO ] {

  - Constants [86] {
    Constant [ integer PARAM_BOOL ] { 5 }
    Constant [ integer PARAM_NULL ] { 0 }
    Constant [ integer PARAM_INT ] { 1 }
    Constant [ integer PARAM_STR ] { 2 }
    Constant [ integer PARAM_LOB ] { 3 }
    Constant [ integer PARAM_STMT ] { 4 }
    Constant [ integer PARAM_INPUT_OUTPUT ] { -2147483648 }
    Constant [ integer PARAM_EVT_ALLOC ] { 0 }
    Constant [ integer PARAM_EVT_FREE ] { 1 }
    Constant [ integer PARAM_EVT_EXEC_PRE ] { 2 }
    Constant [ integer PARAM_EVT_EXEC_POST ] { 3 }
    Constant [ integer PARAM_EVT_FETCH_PRE ] { 4 }
    Constant [ integer PARAM_EVT_FETCH_POST ] { 5 }
    Constant [ integer PARAM_EVT_NORMALIZE ] { 6 }
    Constant [ integer FETCH_LAZY ] { 1 }
    Constant [ integer FETCH_ASSOC ] { 2 }
    Constant [ integer FETCH_NUM ] { 3 }
    Constant [ integer FETCH_BOTH ] { 4 }
    Constant [ integer FETCH_OBJ ] { 5 }
    Constant [ integer FETCH_BOUND ] { 6 }
    Constant [ integer FETCH_COLUMN ] { 7 }
    Constant [ integer FETCH_CLASS ] { 8 }
    Constant [ integer FETCH_INTO ] { 9 }
    Constant [ integer FETCH_FUNC ] { 10 }
    Constant [ integer FETCH_GROUP ] { 65536 }
    Constant [ integer FETCH_UNIQUE ] { 196608 }
    Constant [ integer FETCH_KEY_PAIR ] { 12 }
    Constant [ integer FETCH_CLASSTYPE ] { 262144 }
    Constant [ integer FETCH_SERIALIZE ] { 524288 }
    Constant [ integer FETCH_PROPS_LATE ] { 1048576 }
    Constant [ integer FETCH_NAMED ] { 11 }
    Constant [ integer ATTR_AUTOCOMMIT ] { 0 }
    Constant [ integer ATTR_PREFETCH ] { 1 }
    Constant [ integer ATTR_TIMEOUT ] { 2 }
    Constant [ integer ATTR_ERRMODE ] { 3 }
    Constant [ integer ATTR_SERVER_VERSION ] { 4 }
    Constant [ integer ATTR_CLIENT_VERSION ] { 5 }
    Constant [ integer ATTR_SERVER_INFO ] { 6 }
    Constant [ integer ATTR_CONNECTION_STATUS ] { 7 }
    Constant [ integer ATTR_CASE ] { 8 }
    Constant [ integer ATTR_CURSOR_NAME ] { 9 }
    Constant [ integer ATTR_CURSOR ] { 10 }
    Constant [ integer ATTR_ORACLE_NULLS ] { 11 }
    Constant [ integer ATTR_PERSISTENT ] { 12 }
    Constant [ integer ATTR_STATEMENT_CLASS ] { 13 }
    Constant [ integer ATTR_FETCH_TABLE_NAMES ] { 14 }
    Constant [ integer ATTR_FETCH_CATALOG_NAMES ] { 15 }
    Constant [ integer ATTR_DRIVER_NAME ] { 16 }
    Constant [ integer ATTR_STRINGIFY_FETCHES ] { 17 }
    Constant [ integer ATTR_MAX_COLUMN_LEN ] { 18 }
    Constant [ integer ATTR_EMULATE_PREPARES ] { 20 }
    Constant [ integer ATTR_DEFAULT_FETCH_MODE ] { 19 }
    Constant [ integer ERRMODE_SILENT ] { 0 }
    Constant [ integer ERRMODE_WARNING ] { 1 }
    Constant [ integer ERRMODE_EXCEPTION ] { 2 }
    Constant [ integer CASE_NATURAL ] { 0 }
    Constant [ integer CASE_LOWER ] { 2 }
    Constant [ integer CASE_UPPER ] { 1 }
    Constant [ integer NULL_NATURAL ] { 0 }
    Constant [ integer NULL_EMPTY_STRING ] { 1 }
    Constant [ integer NULL_TO_STRING ] { 2 }
    Constant [ string ERR_NONE ] { 00000 }
    Constant [ integer FETCH_ORI_NEXT ] { 0 }
    Constant [ integer FETCH_ORI_PRIOR ] { 1 }
    Constant [ integer FETCH_ORI_FIRST ] { 2 }
    Constant [ integer FETCH_ORI_LAST ] { 3 }
    Constant [ integer FETCH_ORI_ABS ] { 4 }
    Constant [ integer FETCH_ORI_REL ] { 5 }
    Constant [ integer CURSOR_FWDONLY ] { 0 }
    Constant [ integer CURSOR_SCROLL ] { 1 }
    Constant [ integer MYSQL_ATTR_USE_BUFFERED_QUERY ] { 1000 }
    Constant [ integer MYSQL_ATTR_LOCAL_INFILE ] { 1001 }
    Constant [ integer MYSQL_ATTR_INIT_COMMAND ] { 1002 }
    Constant [ integer MYSQL_ATTR_DIRECT_QUERY ] { 1003 }
    Constant [ integer MYSQL_ATTR_FOUND_ROWS ] { 1004 }
    Constant [ integer MYSQL_ATTR_IGNORE_SPACE ] { 1005 }
    Constant [ integer MYSQL_ATTR_SSL_KEY ] { 1006 }
    Constant [ integer MYSQL_ATTR_SSL_CERT ] { 1007 }
    Constant [ integer MYSQL_ATTR_SSL_CA ] { 1008 }
    Constant [ integer MYSQL_ATTR_SSL_CAPATH ] { 1009 }
    Constant [ integer MYSQL_ATTR_SSL_CIPHER ] { 1010 }
    Constant [ integer ODBC_ATTR_USE_CURSOR_LIBRARY ] { 1000 }
    Constant [ integer ODBC_ATTR_ASSUME_UTF8 ] { 1001 }
    Constant [ integer ODBC_SQL_USE_IF_NEEDED ] { 0 }
    Constant [ integer ODBC_SQL_USE_DRIVER ] { 2 }
    Constant [ integer ODBC_SQL_USE_ODBC ] { 1 }
  }

  - Static properties [0] {
  }

  - Static methods [1] {
    Method [ <internal:PDO> static public method getAvailableDrivers ] {

      - Parameters [0] {
      }
    }
  }

  - Properties [0] {
  }

  - Methods [16] {
    Method [ <internal:PDO, ctor> public method __construct ] {

      - Parameters [4] {
        Parameter #0 [ <required> $dsn ]
        Parameter #1 [ <required> $username ]
        Parameter #2 [ <required> $passwd ]
        Parameter #3 [ <optional> $options ]
      }
    }

    Method [ <internal:PDO> public method prepare ] {

      - Parameters [2] {
        Parameter #0 [ <required> $statment ]
        Parameter #1 [ <optional> $options ]
      }
    }

    Method [ <internal:PDO> public method beginTransaction ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method commit ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method rollBack ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method inTransaction ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method setAttribute ] {

      - Parameters [2] {
        Parameter #0 [ <required> $attribute ]
        Parameter #1 [ <required> $value ]
      }
    }

    Method [ <internal:PDO> public method exec ] {

      - Parameters [1] {
        Parameter #0 [ <required> $query ]
      }
    }

    Method [ <internal:PDO> public method query ] {
    }

    Method [ <internal:PDO> public method lastInsertId ] {

      - Parameters [1] {
        Parameter #0 [ <optional> $seqname ]
      }
    }

    Method [ <internal:PDO> public method errorCode ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method errorInfo ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method getAttribute ] {

      - Parameters [1] {
        Parameter #0 [ <required> $attribute ]
      }
    }

    Method [ <internal:PDO> public method quote ] {

      - Parameters [2] {
        Parameter #0 [ <required> $string ]
        Parameter #1 [ <optional> $paramtype ]
      }
    }

    Method [ <internal:PDO> final public method __wakeup ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> final public method __sleep ] {

      - Parameters [0] {
      }
    }
  }
}

Live UNIX Apache server (not working), PHP Version 5.3.18

PDO class debug output:

Class [ <internal:PDO> class PDO ] {

  - Constants [77] {
    Constant [ integer PARAM_BOOL ] { 5 }
    Constant [ integer PARAM_NULL ] { 0 }
    Constant [ integer PARAM_INT ] { 1 }
    Constant [ integer PARAM_STR ] { 2 }
    Constant [ integer PARAM_LOB ] { 3 }
    Constant [ integer PARAM_STMT ] { 4 }
    Constant [ integer PARAM_INPUT_OUTPUT ] { -2147483648 }
    Constant [ integer PARAM_EVT_ALLOC ] { 0 }
    Constant [ integer PARAM_EVT_FREE ] { 1 }
    Constant [ integer PARAM_EVT_EXEC_PRE ] { 2 }
    Constant [ integer PARAM_EVT_EXEC_POST ] { 3 }
    Constant [ integer PARAM_EVT_FETCH_PRE ] { 4 }
    Constant [ integer PARAM_EVT_FETCH_POST ] { 5 }
    Constant [ integer PARAM_EVT_NORMALIZE ] { 6 }
    Constant [ integer FETCH_LAZY ] { 1 }
    Constant [ integer FETCH_ASSOC ] { 2 }
    Constant [ integer FETCH_NUM ] { 3 }
    Constant [ integer FETCH_BOTH ] { 4 }
    Constant [ integer FETCH_OBJ ] { 5 }
    Constant [ integer FETCH_BOUND ] { 6 }
    Constant [ integer FETCH_COLUMN ] { 7 }
    Constant [ integer FETCH_CLASS ] { 8 }
    Constant [ integer FETCH_INTO ] { 9 }
    Constant [ integer FETCH_FUNC ] { 10 }
    Constant [ integer FETCH_GROUP ] { 65536 }
    Constant [ integer FETCH_UNIQUE ] { 196608 }
    Constant [ integer FETCH_KEY_PAIR ] { 12 }
    Constant [ integer FETCH_CLASSTYPE ] { 262144 }
    Constant [ integer FETCH_SERIALIZE ] { 524288 }
    Constant [ integer FETCH_PROPS_LATE ] { 1048576 }
    Constant [ integer FETCH_NAMED ] { 11 }
    Constant [ integer ATTR_AUTOCOMMIT ] { 0 }
    Constant [ integer ATTR_PREFETCH ] { 1 }
    Constant [ integer ATTR_TIMEOUT ] { 2 }
    Constant [ integer ATTR_ERRMODE ] { 3 }
    Constant [ integer ATTR_SERVER_VERSION ] { 4 }
    Constant [ integer ATTR_CLIENT_VERSION ] { 5 }
    Constant [ integer ATTR_SERVER_INFO ] { 6 }
    Constant [ integer ATTR_CONNECTION_STATUS ] { 7 }
    Constant [ integer ATTR_CASE ] { 8 }
    Constant [ integer ATTR_CURSOR_NAME ] { 9 }
    Constant [ integer ATTR_CURSOR ] { 10 }
    Constant [ integer ATTR_ORACLE_NULLS ] { 11 }
    Constant [ integer ATTR_PERSISTENT ] { 12 }
    Constant [ integer ATTR_STATEMENT_CLASS ] { 13 }
    Constant [ integer ATTR_FETCH_TABLE_NAMES ] { 14 }
    Constant [ integer ATTR_FETCH_CATALOG_NAMES ] { 15 }
    Constant [ integer ATTR_DRIVER_NAME ] { 16 }
    Constant [ integer ATTR_STRINGIFY_FETCHES ] { 17 }
    Constant [ integer ATTR_MAX_COLUMN_LEN ] { 18 }
    Constant [ integer ATTR_EMULATE_PREPARES ] { 20 }
    Constant [ integer ATTR_DEFAULT_FETCH_MODE ] { 19 }
    Constant [ integer ERRMODE_SILENT ] { 0 }
    Constant [ integer ERRMODE_WARNING ] { 1 }
    Constant [ integer ERRMODE_EXCEPTION ] { 2 }
    Constant [ integer CASE_NATURAL ] { 0 }
    Constant [ integer CASE_LOWER ] { 2 }
    Constant [ integer CASE_UPPER ] { 1 }
    Constant [ integer NULL_NATURAL ] { 0 }
    Constant [ integer NULL_EMPTY_STRING ] { 1 }
    Constant [ integer NULL_TO_STRING ] { 2 }
    Constant [ string ERR_NONE ] { 00000 }
    Constant [ integer FETCH_ORI_NEXT ] { 0 }
    Constant [ integer FETCH_ORI_PRIOR ] { 1 }
    Constant [ integer FETCH_ORI_FIRST ] { 2 }
    Constant [ integer FETCH_ORI_LAST ] { 3 }
    Constant [ integer FETCH_ORI_ABS ] { 4 }
    Constant [ integer FETCH_ORI_REL ] { 5 }
    Constant [ integer CURSOR_FWDONLY ] { 0 }
    Constant [ integer CURSOR_SCROLL ] { 1 }
    Constant [ integer MYSQL_ATTR_USE_BUFFERED_QUERY ] { 1000 }
    Constant [ integer MYSQL_ATTR_LOCAL_INFILE ] { 1001 }
    Constant [ integer MYSQL_ATTR_INIT_COMMAND ] { 1002 }
    Constant [ integer MYSQL_ATTR_READ_DEFAULT_FILE ] { 1003 }
    Constant [ integer MYSQL_ATTR_READ_DEFAULT_GROUP ] { 1004 }
    Constant [ integer MYSQL_ATTR_MAX_BUFFER_SIZE ] { 1005 }
    Constant [ integer MYSQL_ATTR_DIRECT_QUERY ] { 1006 }
  }

  - Static properties [0] {
  }

  - Static methods [1] {
    Method [ <internal:PDO> static public method getAvailableDrivers ] {

      - Parameters [0] {
      }
    }
  }

  - Properties [0] {
  }

  - Methods [16] {
    Method [ <internal:PDO, ctor> public method __construct ] {

      - Parameters [4] {
        Parameter #0 [ <required> $dsn ]
        Parameter #1 [ <required> $username ]
        Parameter #2 [ <required> $passwd ]
        Parameter #3 [ <optional> $options ]
      }
    }

    Method [ <internal:PDO> public method prepare ] {

      - Parameters [2] {
        Parameter #0 [ <required> $statment ]
        Parameter #1 [ <optional> $options ]
      }
    }

    Method [ <internal:PDO> public method beginTransaction ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method commit ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method rollBack ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method inTransaction ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method setAttribute ] {

      - Parameters [2] {
        Parameter #0 [ <required> $attribute ]
        Parameter #1 [ <required> $value ]
      }
    }

    Method [ <internal:PDO> public method exec ] {

      - Parameters [1] {
        Parameter #0 [ <required> $query ]
      }
    }

    Method [ <internal:PDO> public method query ] {
    }

    Method [ <internal:PDO> public method lastInsertId ] {

      - Parameters [1] {
        Parameter #0 [ <optional> $seqname ]
      }
    }

    Method [ <internal:PDO> public method errorCode ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method errorInfo ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> public method getAttribute ] {

      - Parameters [1] {
        Parameter #0 [ <required> $attribute ]
      }
    }

    Method [ <internal:PDO> public method quote ] {

      - Parameters [2] {
        Parameter #0 [ <required> $string ]
        Parameter #1 [ <optional> $paramtype ]
      }
    }

    Method [ <internal:PDO> final public method __wakeup ] {

      - Parameters [0] {
      }
    }

    Method [ <internal:PDO> final public method __sleep ] {

      - Parameters [0] {
      }
    }
  }
}

Here are links to pasties of the php.ini file (content was too large go to add to this post): Part 1, Part 2

What's the minimum we need to do to get these missing properties into the live server's PDO library? Actually, what is even going on here, why are they so different?

apache-2.2

2 Answers

  1. The missing constant gets declared in ext/pdo_mysql/pdo_mysql.c, which depending on your system is available in either of the following modules:

    • pdo_mysqlnd.so
    • pdo_mysql.so

    When you run php -m you will be able to see if any of those modules is actually loaded; you would be looking for the pdo_mysql module.

    To compile the module against mysqlnd into the PHP binary itself:

    ./config.nice --enable-mysqlnd --with-pdo-mysql=mysqlnd
make && make install
    • 2
  2. Best Answer

    So you just forced me to rebuild my PHP without mysqlnd (like your build, using only libmysql backend) to check my theory. Fortunately I have a Gentoo installation to do it quick!

    As I expected, without mysqlnd, there are NO ANY PDO::MYSQL_* constants in PDO class at all. So to get them in place, you should use mysqlnd: either recompile PHP, or possibly get an pdo_mysqlnd.so (or php_mysql.so built against mysqlnd) extension and load it.

    Windows PHP binary seems coming compiled with mysqlnd.

    By the way, mysqlnd is default backend as of PHP 5.4.0.

    • 2