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Undefined class constant 'PDO::FETCH_DEFAULT'

I'm using PHP FluentPDO, this query works in localhost, but not in webhosting. PHP version is 7.4, FluentPDO: "envms/fluentpdo": "^2.2":

$pdo = new PDO("mysql:dbname={$mysql['db_name']};host={$mysql['host']}", $mysql['user'],
    $mysql['password'], array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'utf8'", PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC));

$q = new Query($pdo);

$q->from('table')
    ->where(['email' => 'admin@example.com'])
    ->select('id, name, email, password', true)
    ->fetchAll();

The error is:

Undefined class constant 'PDO::FETCH_DEFAULT'

over 4 years ago · Santiago Trujillo
2 answers
Answer question

0

PHP version is 7.4

This PHP version is no longer supported. Please upgrade to an actively supported version if you can.

PDO::FETCH_DEFAULT is available only since PHP 8.0.7, so if you are using an earlier version, this constant will not be available.

FluentPDO version 2.2 should still support PHP 7.4, which makes this a bug in FluentPDO. There already exists a pull request to fix this bug.

over 4 years ago · Santiago Trujillo Report

0

This package seems to have a configuration error. Current stable version declares PHP/7.1 as minimum version (code):

"php": ">=7.1",

However it's using the PDO::FETCH_DEFAULT constant, which requires PHP/8.0.7 or greater (source and code):

PDO::FETCH_DEFAULT (int) Specifies that the default fetch mode shall be used. Available as of PHP 8.0.7.

/** @var int */
protected $currentFetchMode = PDO::FETCH_DEFAULT;

Your options are:

  • Report the issue and hope it's fixed by maintaining backwards compatibility with your PHP version. Edit: https://github.com/envms/fluentpdo/issues/326
  • Upgrade to a supported PHP version.
  • Find another library.
over 4 years ago · Santiago Trujillo Report
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