After updating Magento v2.4.6-p6 to Magento v2.4.7-p1, clients reported issues printing order invoices.
The exception log showed an issue creating temporary files.
[2024-07-19T08:24:02.201490+00:00] main.CRITICAL: Error: Call to undefined function Magento\Framework\File\Pdf\ImageResource\tmpfile() in ../vendor/magento/framework/File/Pdf/ImageResource/ImageFactory.php:69Stack trace:
/vendor/magento/framework/File/Pdf/ImageResource/ImageFactory.php(49): Magento\Framework\File\Pdf\ImageResource\ImageFactory->createTemporaryFileAndPutContent()
/vendor/magento/framework/File/Pdf/Image.php(37): Magento\Framework\File\Pdf\ImageResource\ImageFactory->factory()
Magento 2 tmpfile() issue
The Magento v2.4.7-p1 upgrade had disabled the tmpfile function.
Magento 2 tmpfile() fix
Find your web applications php.ini file or PHP FPM Settings in your host’s control panel.
Look for the text tmpfile.
For me it was in a long list after;
php_admin_value[disable_functions]=
Leave the other entries but remove tmpfile and save the php.ini file.
You should now be able to print off PDF invoices. It would be helpful if an up-to-date gotcha list with recommended solutions was released by Adobe with every Magento 2 update, as these minor bugs are fairly common and can be difficult to debug if there’s little discussion online at the time.
Magento 2 putenv issue – putenv has been disabled for security reasons
{“exception”:”[object] (Error(code: 0): Call to undefined function Magento\Framework\Composer\putenv() at /public_html/vendor/magento/framework/Composer/ComposerFactory.php:43)”}
[main.CRITICAL: Error: Call to undefined function Magento\Framework\Composer\putenv()
There’s a similar error when putenv has been disabled. The fix is the same as for tmpfile(), the entry just needs to be removed from the php_admin_value[disable_functions]= list.
