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<?php function brokenTrace($arg1, $arg2) { backtraceWrapper(); unset($arg1); backtraceWrapper(); unset($arg2); backtraceWrapper(); } function backtraceWrapper() { $bt = debug_backtrace(); $args = $bt[1]['args']; print_r($args); var_dump($args); foreach ($args as $arg); for ($i = 0; $i < count($args); $i++) { var_dump($args[$i]); } } brokenTrace("A", "B");
Output for 7.0.22 - 7.0.33, 7.1.8 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [0] => A [1] => B ) array(2) { [0]=> string(1) "A" [1]=> string(1) "B" } string(1) "A" string(1) "B" Array ( [0] => [1] => B ) array(2) { [0]=> NULL [1]=> string(1) "B" } NULL string(1) "B" Array ( [0] => [1] => ) array(2) { [0]=> NULL [1]=> NULL } NULL NULL
Output for 7.0.0 - 7.0.21, 7.1.0 - 7.1.7
Array ( [0] => A [1] => B ) array(2) { [0]=> string(1) "A" [1]=> string(1) "B" } string(1) "A" string(1) "B" Array ( [1] => B ) array(1) { [1]=> string(1) "B" } Notice: Undefined offset: 0 in /in/tTmDb on line 23 NULL Array ( ) array(0) { }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Array ( [0] => A [1] => B ) array(2) { [0]=> &string(1) "A" [1]=> &string(1) "B" } string(1) "A" string(1) "B" Array ( [0] => A [1] => B ) array(2) { [0]=> &string(1) "A" [1]=> &string(1) "B" } string(1) "A" string(1) "B" Array ( [0] => A [1] => B ) array(2) { [0]=> &string(1) "A" [1]=> &string(1) "B" } string(1) "A" string(1) "B"

preferences:
286.15 ms | 402 KiB | 369 Q