Bug #78038 [NEW]: Socket_Select fails when resource array contains non-sequential keys

From: ogdg at protonmail dot com Operating system: Fedora 30 PHP version: 7.3.5 Package: Sockets related Bug Type: Bug Bug description:Socket_Select fails when resource array contains non-sequential keys Description: ------------ This bug occurs in PHP CLI 7.3.5! When socket connection resources are indexed in an array by non-sequential numeric keys, socket_select throws a warning and does not actually accept the array even though it contains valid socket resources. By manually re-indexing the array to contain sequentially numbered keys, the problem disappears. This could a problem with large key values, or non sequential keys, or both. The problem did not exist in previous versions of PHP, and it is not valid for socket_select to require arrays that are sequentially numbered, as there are reasons to index connection arrays by process ID or some other meaningful number. Test script: --------------- # Assume each $connN variable is a valid socket resource # Note that array keys are INT and not string type $connections = array(1235 => $conn1, 2084 => $conn2, 3509 => $conn3); $w = $e = NULL; $r = $connections; $check = socket_select($r, $w, $e, 0); # The ABOVE code fails with bogus warnings in PHP 7.3.5 # The BELOW code works $w = $e = NULL; foreach($connections as $v) $r[] = $v; $check = socket_select($r, $w, $e, 0); Expected result: ---------------- Expect socket_select to work as intended and return a value for $check and a modified connection resource array if appropriate. Actual result: -------------- Result is two warnings: socket_select(): supplied argument is not a valid Socket resource socket_select(): no resource arrays were passed to select Previous versions of PHP, including PHP 7 did not have this problem. -- Edit bug report at https://bugs.php.net/bug.php?id=78038&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=78038&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=78038&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=78038&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=78038&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78038&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78038&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78038&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78038&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78038&r=support Expected behavior: https://bugs.php.net/fix.php?id=78038&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78038&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78038&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78038&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78038&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=78038&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78038&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78038&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78038&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78038&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78038&r=mysqlcfg