Bug #69413 [NEW]: Warning in array_count_values() about array values not being string/int

From: berdir Operating system: Linux PHP version: master-Git-2015-04-09 (Git) Package: Arrays related Bug Type: Bug Bug description:Warning in array_count_values() about array values not being string/int Description: ------------ This is part of our efforts to get Drupal 8 green on PHP 7, see https://www.drupal.org/node/2454439. This might be related to https://bugs.php.net/bug.php?id=69371, which was a somewhat similar php bug that we found (Similar as in, arrays/array functions behaving strangely). We have a code line like this: array_count_values($form_state->getValue('prefix')) This displays: array_count_values(): Can only count STRING and INTEGER values! Warning NegotiationUrlForm.php 183 Drupal\language\Form\NegotiationUrlForm->validateForm() But the array definitely is valid: Array ( [en] => [fr] => fr ) (en is an empty string, type string) Looping over the array works, accessing the keys works. Trying the same with that array works: $ php7 -r '$array = array("en" => "", "fr" => "fr"); var_dump(array_count_values($array));' array(2) { [""]=> int(1) ["fr"]=> int(1) } Re-creating the array with the same values works: $prefix = ['en' => $form_state->getValue('prefix')['en'], 'fr' => $form_state->getValue('prefix')['fr']]; $count = array_count_values($prefix); So, similar in the other issue, the array or one of those values seems to be in a weird state. I've tracked down the place where this warning is displayed to https://github.com/php/php-src/blob/master/ext/standard/array.c#L3017. If anyone can tell me what to put there to debug the content and type of entry, then I'm more than happy to try that. -- Edit bug report at https://bugs.php.net/bug.php?id=69413&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69413&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69413&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69413&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69413&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69413&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69413&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69413&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69413&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69413&r=support Expected behavior: https://bugs.php.net/fix.php?id=69413&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69413&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69413&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69413&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69413&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69413&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69413&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69413&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69413&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69413&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69413&r=mysqlcfg