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run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = array( array("title" => 1, "children" => array( array( "selected" => true, "key" => 100, "children" => array() ) ), array( "selected" => true, "key" => 500, "children" => array() ), array( "selected" => true, "key" => 200, "children" => array( array( "selected" => true, "key" => 300, "children" => array( array( "selected" => true, "key" => 400, "children" => array() ) ) ) ) ) ) ); $selectedValues = array(); $iterator = new \RecursiveIteratorIterator(new \RecursiveArrayIterator($array)); foreach ($iterator as $key => $value) { if ($key == "key") { echo $value .PHP_EOL; var_dump($iterator->callGetChildren()); } } /* $selectedValues = array(); $iterator = new \RecursiveIteratorIterator(new \RecursiveArrayIterator($array)); foreach ($iterator as $key => $value) { if ($key == "selected") { $depth = $iterator->getDepth(); $subIterator = $iterator->getSubIterator($depth); foreach ($subIterator as $key2 => $value2) { if ($key2 == "key") { echo $value2 . PHP_EOL; } } } } */
based on 4gM9I
Output for 7.0.20, 7.1.5 - 7.2.0
100 Fatal error: Uncaught InvalidArgumentException: Passed variable is not an array or object in /in/FpCsb:40 Stack trace: #0 [internal function]: ArrayIterator->__construct(100, 0) #1 [internal function]: RecursiveArrayIterator->getChildren() #2 /in/FpCsb(40): RecursiveIteratorIterator->callGetChildren() #3 {main} thrown in /in/FpCsb on line 40
Process exited with code 255.
Output for 7.0.0 - 7.0.6, 7.1.0
100 Fatal error: Uncaught InvalidArgumentException: Passed variable is not an array or object, using empty array instead in /in/FpCsb:40 Stack trace: #0 [internal function]: ArrayIterator->__construct(100, 0) #1 [internal function]: RecursiveArrayIterator->getChildren() #2 /in/FpCsb(40): RecursiveIteratorIterator->callGetChildren() #3 {main} thrown in /in/FpCsb on line 40
Process exited with code 255.
Output for 5.3.17 - 5.6.28
100 Fatal error: Uncaught exception 'InvalidArgumentException' with message 'Passed variable is not an array or object, using empty array instead' in /in/FpCsb:40 Stack trace: #0 [internal function]: ArrayIterator->__construct(100, 67108864) #1 [internal function]: RecursiveArrayIterator->getChildren() #2 /in/FpCsb(40): RecursiveIteratorIterator->callGetChildren() #3 {main} thrown in /in/FpCsb on line 40
Process exited with code 255.