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<?php class MyIterator implements Iterator { private $var = array(); public function __construct($array) { if (is_array($array)) { $this->var = $array; } } public function rewind() { echo "rewinding\n"; reset($this->var); } public function current() { $var = current($this->var); echo "current: $var\n"; return $var; } public function key() { $var = key($this->var); echo "key: $var\n"; return $var; } public function next() { $var = next($this->var); echo "next: $var\n"; return $var; } public function valid() { $key = key($this->var); $var = ($key !== NULL && $key !== FALSE); echo "valid: $var\n"; return $var; } } $values = array(1,2,3); $it = new MyIterator(); foreach ($it as $a => $b) { print "$a: $b\n"; } var_dump($it->valid()); ?>
Output for 7.1.0
Fatal error: Uncaught ArgumentCountError: Too few arguments to function MyIterator::__construct(), 0 passed in /in/Z5n9M on line 52 and exactly 1 expected in /in/Z5n9M:6 Stack trace: #0 /in/Z5n9M(52): MyIterator->__construct() #1 {main} thrown in /in/Z5n9M on line 6
Process exited with code 255.
Output for 5.1.0 - 5.6.21, 7.0.0 - 7.0.14
Warning: Missing argument 1 for MyIterator::__construct(), called in /in/Z5n9M on line 52 and defined in /in/Z5n9M on line 6 Notice: Undefined variable: array in /in/Z5n9M on line 8 rewinding valid: valid: bool(false)
Output for hhvm-3.12.0
Warning: __construct() expects exactly 1 parameter, 0 given in /in/Z5n9M on line -1 Notice: Undefined variable: array in /in/Z5n9M on line -1 rewinding valid: valid: bool(false)
Output for hhvm-3.10.0
Warning: __construct() expects exactly 1 parameter, 0 given in /in/Z5n9M on line 8 Notice: Undefined variable: array in /in/Z5n9M on line 8 rewinding valid: valid: bool(false)
Output for 5.0.0 - 5.0.5
Warning: Missing argument 1 for MyIterator::__construct() in /in/Z5n9M on line 6 rewinding valid: valid: bool(false)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/Z5n9M on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/Z5n9M on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/Z5n9M on line 2
Process exited with code 255.