@ 2013-11-24T03:18:43Z <?php
class DataContainer implements IteratorAggregate {
protected $data;
public function __construct(array $data) {
$this->data = $data;
}
public function &getIterator() {
foreach ($this->data as &$value) {
echo 'in foreach ...';
yield $value;
}
}
}
$dataContainer = new DataContainer([77, 78, 79]);
var_dump($dataContainer);
foreach ($dataContainer as &$value) {
$value *= -1;
}
var_dump($dataContainer,$value); // -77,-78,&int-79
// Must unset $value ...
foreach($dataContainer as $value){
var_dump($value);
}
var_dump($dataContainer);// -77,-78,&int-78
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Output for 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 Deprecated: Return type of & DataContainer::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/gvmNA on line 7
object(DataContainer)#1 (1) {
["data":protected]=>
array(3) {
[0]=>
int(77)
[1]=>
int(78)
[2]=>
int(79)
}
}
in foreach ...in foreach ...in foreach ...object(DataContainer)#1 (1) {
["data":protected]=>
array(3) {
[0]=>
int(-77)
[1]=>
int(-78)
[2]=>
&int(-79)
}
}
int(-79)
in foreach ...int(-77)
in foreach ...int(-78)
in foreach ...int(-78)
object(DataContainer)#1 (1) {
["data":protected]=>
array(3) {
[0]=>
int(-77)
[1]=>
int(-78)
[2]=>
&int(-78)
}
}
Output for 5.5.0 - 5.5.38 , 5.6.0 - 5.6.40 , 7.0.0 - 7.0.33 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 object(DataContainer)#1 (1) {
["data":protected]=>
array(3) {
[0]=>
int(77)
[1]=>
int(78)
[2]=>
int(79)
}
}
in foreach ...in foreach ...in foreach ...object(DataContainer)#1 (1) {
["data":protected]=>
array(3) {
[0]=>
int(-77)
[1]=>
int(-78)
[2]=>
&int(-79)
}
}
int(-79)
in foreach ...int(-77)
in foreach ...int(-78)
in foreach ...int(-78)
object(DataContainer)#1 (1) {
["data":protected]=>
array(3) {
[0]=>
int(-77)
[1]=>
int(-78)
[2]=>
&int(-78)
}
}
Output for 5.4.0 - 5.4.45 Parse error: syntax error, unexpected '$value' (T_VARIABLE) in /in/gvmNA on line 10
Process exited with code 255 . Output for 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 Parse error: syntax error, unexpected T_VARIABLE in /in/gvmNA on line 10
Process exited with code 255 . Output for 5.0.0 - 5.0.5 Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/gvmNA on line 4
Process exited with code 255 . Output for 4.4.2 - 4.4.9 Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/gvmNA on line 2
Process exited with code 255 . Output for 4.3.0 - 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 Parse error: parse error, unexpected T_STRING, expecting '{' in /in/gvmNA on line 2
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error, expecting `'{'' in /in/gvmNA on line 2
Process exited with code 255 . preferences:dark mode live preview
306.46 ms | 401 KiB | 457 Q