Bug #77954 [Fbk->Opn]: Binding value as PDO::PARAM_INT has different behaviour in PHP 7.2

Edit report at https://bugs.php.net/bug.php?id=77954&edit=1 ID: 77954 User updated by: f dot bosch at genkgo dot nl Reported by: f dot bosch at genkgo dot nl Summary: Binding value as PDO::PARAM_INT has different behaviour in PHP 7.2 -Status: Feedback +Status: Open Type: Bug Package: PDO MySQL Operating System: Ubuntu PHP Version: 7.2.17 Block user comment: N Private report: N New Comment: You are right. I totally agree that the previous behaviour was not correct. Since I could not find any reason why the behaviour change was there, no backward-incompatibility notice in this regard, I was wondering if this is intensional. This could affect quite some people, especially those using the Laravel framework and/or only its database component. If you no idea, please just close the report. Previous Comments: ------------------------------------------------------------------------ [2019-05-01 09:02:49] nikic@php.net Why do you think the previous behavior was correct? It seems right to me that if an integer binding is requested it should be bound as an integer. ------------------------------------------------------------------------ [2019-05-01 08:59:43] f dot bosch at genkgo dot nl Description: ------------ When binding a value against a MySQL PDO statement, the behaviour between PHP 7.1 and PHP 7.2 differs. When you bind a value as integer while passing a float, this was no problem with PHP7.1. However, it became a problem in PHP7.2. The problem is when executing the following. It inserts 0.5 in PHP7.1, and 0 in PHP7.2. I have tested this against MariaDB (10.1 and 10.2), not against MySQL. Another person also found difference in behaviour: https://stackoverflow.com/questions/54413798/pdoparam-int-behaviour-in-php-7-1-php-7-2. $stmt = $pdo->prepare('INSERT INTO tbl (val) VALUES (?)'); $stmt->bindValue(1, 0.5, PDO::PARAM_INT); See also this pull request in the Laravel Framework for this behaviour change: https://github.com/laravel/framework/pull/28379. Test script: --------------- <?php $pdo = new PDO('mysql:dbname=floattest;host=127.0.0.1', 'root', ''); $create = $pdo->prepare('CREATE TABLE IF NOT EXISTS tbl (val DECIMAL(9,2))'); $create->execute(); $del = $pdo->prepare('DELETE FROM tbl'); $del->execute(); $ins = $pdo->prepare('INSERT INTO tbl (val) VALUES (?)'); $ins->bindValue(1, 0.5, PDO::PARAM_INT); $ins->execute(); $sel = $pdo->prepare('SELECT * FROM tbl'); $sel->execute(); var_dump($sel->fetchColumn(0)); Expected result: ---------------- 0.5 Actual result: -------------- 0 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77954&edit=1