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run code in 150+ php & hhvm versions
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<?php $data='<data> <seg id="A1"/> <seg id="A5"/> <seg id="A12"/> <seg id="A29"/> <seg id="A30"/> </data>'; $doc=new SimpleXMLElement($data); var_dump($doc); foreach($doc->seg as &$seg) { if($seg['id'] == 'A12') { unset($seg); } } var_dump($seg);
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
object(SimpleXMLElement)#1 (1) { ["seg"]=> array(5) { [0]=> object(SimpleXMLElement)#2 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A1" } } [1]=> object(SimpleXMLElement)#3 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A5" } } [2]=> object(SimpleXMLElement)#4 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A12" } } [3]=> object(SimpleXMLElement)#5 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A29" } } [4]=> object(SimpleXMLElement)#6 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A30" } } } } Fatal error: An iterator cannot be used with foreach by reference in /in/6lHoL on line 14
Process exited with code 255.
Output for hhvm-3.12.0
object(SimpleXMLElement)#1 (1) { ["seg"]=> array(5) { [0]=> object(SimpleXMLElement)#2 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A1" } } [1]=> object(SimpleXMLElement)#3 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A5" } } [2]=> object(SimpleXMLElement)#4 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A12" } } [3]=> object(SimpleXMLElement)#5 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A29" } } [4]=> object(SimpleXMLElement)#6 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A30" } } } } Fatal error: Uncaught Error: An iterator cannot be used with foreach by reference in /in/6lHoL:20 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
object(SimpleXMLElement)#1 (1) { ["seg"]=> array(5) { [0]=> object(SimpleXMLElement)#2 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A1" } } [1]=> object(SimpleXMLElement)#3 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A5" } } [2]=> object(SimpleXMLElement)#4 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A12" } } [3]=> object(SimpleXMLElement)#5 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A29" } } [4]=> object(SimpleXMLElement)#6 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A30" } } } } Fatal error: An iterator cannot be used with foreach by reference in /in/6lHoL on line 20
Process exited with code 255.
Output for 5.1.3 - 5.1.6
object(SimpleXMLElement)#1 (1) { ["seg"]=> array(5) { [0]=> object(SimpleXMLElement)#2 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A1" } } [1]=> object(SimpleXMLElement)#3 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A5" } } [2]=> object(SimpleXMLElement)#4 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A12" } } [3]=> object(SimpleXMLElement)#5 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A29" } } [4]=> object(SimpleXMLElement)#6 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A30" } } } } object(SimpleXMLElement)#11 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A30" } }
Output for 5.1.2
object(SimpleXMLElement)#1 (1) { ["seg"]=> array(5) { [0]=> object(SimpleXMLElement)#2 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A1" } } [1]=> object(SimpleXMLElement)#3 (1) { ["@attributes"]=> array(1) { ["id"]=> string(2) "A5" } } [2]=> object(SimpleXMLElement)#4 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A12" } } [3]=> object(SimpleXMLElement)#5 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A29" } } [4]=> object(SimpleXMLElement)#6 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A30" } } } } object(SimpleXMLElement)#10 (1) { ["@attributes"]=> array(1) { ["id"]=> string(3) "A30" } }
Output for 5.0.0 - 5.1.1
object(SimpleXMLElement)#1 (1) { ["seg"]=> array(5) { [0]=> object(SimpleXMLElement)#2 (0) { } [1]=> object(SimpleXMLElement)#3 (0) { } [2]=> object(SimpleXMLElement)#4 (0) { } [3]=> object(SimpleXMLElement)#5 (0) { } [4]=> object(SimpleXMLElement)#6 (0) { } } } object(SimpleXMLElement)#10 (0) { }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/6lHoL on line 14
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/6lHoL on line 14
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/6lHoL on line 14
Process exited with code 255.