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run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = new RecursiveArrayIterator([['test2', 'test3']]); $regex = new RecursiveRegexIterator($arr, '/^test/', RecursiveRegexIterator::ALL_MATCHES, 1, 2); $regex->next(); $child = $regex->getChildren(); #var_dump(get_class($child), $child->getMode(), $child->getFlags(), $child->getPregFlags());
based on NHcp3
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught TypeError: RecursiveRegexIterator::__construct() expects parameter 1 to be RecursiveIterator, null given in /in/5h7K5:8 Stack trace: #0 [internal function]: RecursiveRegexIterator->__construct(NULL, '/^test/', 2, 1, 2) #1 /in/5h7K5(8): RecursiveRegexIterator->getChildren() #2 {main} thrown in /in/5h7K5 on line 8
Process exited with code 255.
Output for hhvm-3.10.0 - 3.12.0
Catchable fatal error: Argument 1 passed to RecursiveRegexIterator::__construct() must implement interface RecursiveIterator, null given
Process exited with code 255.
Output for 5.5.24 - 5.6.28

Process exited with code 139.
Output for 5.4.0 - 5.4.45
Fatal error: Uncaught exception 'InvalidArgumentException' with message 'RecursiveRegexIterator::__construct() expects parameter 1 to be RecursiveIterator, null given' in /in/5h7K5:8 Stack trace: #0 [internal function]: RecursiveRegexIterator->__construct(NULL, '/^test/') #1 /in/5h7K5(8): RecursiveRegexIterator->getChildren() #2 {main} thrown in /in/5h7K5 on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/5h7K5 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/5h7K5 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/5h7K5 on line 3
Process exited with code 255.