Bug #78976 [Com]: fputcsv and fwrite behavior changed from previous version on failure

Edit report at https://bugs.php.net/bug.php?id=78976&edit=1 ID: 78976 Comment by: nyamsprod at gmail dot com Reported by: nyamsprod at gmail dot com Summary: fputcsv and fwrite behavior changed from previous version on failure Status: Open Type: Bug Package: SPL related PHP Version: 7.4.0 Block user comment: N Private report: N New Comment: Seems this BC is documented but the fact that I get -1 instead of false when using SplFileObject::fputcsv is the real bug. Previous Comments: ------------------------------------------------------------------------ [2019-12-17 07:39:16] nyamsprod at gmail dot com Description: ------------ The behavior of fwrite/fputcsv and SplFileObject::fwrite and SplFileObject::fputcsv have changed in PHP7.4 when used with a non writable stream. see https://3v4l.org/ifpaa Reading the changelog I fail to see where this is mention so is it the now expected behaviour from PHP7.4+ or is it a bug ? Test script: --------------- <?php $spl = new SplFileObject('php://temp', 'r'); $fh = fopen('php://temp', 'r'); var_export([ 'SplFileObject::fputcsv result on failure' => $spl->fputcsv(['foo', 'bar']), 'SplFileObject::fwrite result on failure' => $spl->fwrite('foo'), 'fputcsv result on failure' => fputcsv($fh, ['foo', 'bar']), 'fwrite result on failure' => fwrite($fh, 'foo'), ]); Expected result: ---------------- array ( 'SplFileObject::fputcsv result on failure' => 0, 'SplFileObject::fwrite result on failure' => 0, 'fputcsv result on failure' => 0, 'fwrite result on failure' => 0, ) Actual result: -------------- array ( 'SplFileObject::fputcsv result on failure' => -1, 'SplFileObject::fwrite result on failure' => false, 'fputcsv result on failure' => false, 'fwrite result on failure' => false, ) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78976&edit=1