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[Bug]: imagecreatefromstring(): Data is not in a recognized format #20412
Description
Describe the bug
I think I managed to reproduce this bug https://reports.phpmyadmin.net/reports/view/89249
Warning in ./libraries/classes/Image/ImageWrapper.php#95
imagecreatefromstring(): Data is not in a recognized format
It happens when the structure of the image column is changed and rows contain a filename for example and also a image.
How to Reproduce
- Go to https://demo.phpmyadmin.net/QA_5_2/index.php?route=/&server=1 (MariaDB)
- Run
CREATE DATABASE IF NOT EXISTS `test`;
CREATE TABLE IF NOT EXISTS `test`.`test` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`image` longblob NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
INSERT IGNORE INTO `test`.`test` (`id`, `image`) VALUES (1, 0x0);
INSERT IGNORE INTO `test`.`test` (`id`, `image`) VALUES (2, 0x89504e470d0a1a0a0000000d4948445200000001000000010802000000907753de0000000f494441547801010400fbff00ffffff05fe02fe49666e2b0000000049454e44ae426082);- Go to
Structureand changeimagewith:
Media type -> image/png
Browser display transformation -> Inline (image/png): Inline
- Browser table
- See error
Screenshots
08.08.2026_15.13.01_REC.mp4
Database Server
MariaDB
phpMyAdmin version
5.2.4-dev, 6.0.0-dev
Activity