Bug #79764 [NEW]: finfo::file returns text/plain mime type when JSON contains empty arrays

From: edi dot modric at gmail dot com Operating system: Ubuntu 20.04 PHP version: 7.4.7 Package: Filesystem function related Bug Type: Bug Bug description:finfo::file returns text/plain mime type when JSON contains empty arrays Description: ------------ Using the following JSON document: { "foo": [] } finfo::file method wrongly returns text/plain as mime type instead of application/json. Modifying the JSON document to e.g.: { "foo": ["bar"] } makes the function behave correctly and returns application/json. Test script: --------------- <?php $finfo = new finfo(FILEINFO_MIME_TYPE); echo $finfo->file('file.json') . PHP_EOL; Expected result: ---------------- With the following content of file.json: { "foo": [] } I expect to see "application/json" as the output. Actual result: -------------- With the following content of file.json: { "foo": [] } "text/plain" is returned. -- Edit bug report at https://bugs.php.net/bug.php?id=79764&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79764&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79764&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79764&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79764&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79764&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79764&r=support Expected behavior: https://bugs.php.net/fix.php?id=79764&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79764&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79764&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79764&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79764&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79764&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79764&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79764&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79764&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79764&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79764&r=mysqlcfg