<?php
class P{
public $foo;
}
class C extends P {
public $lol;
public function getFields()
{
$p = array_keys(get_class_vars(get_parent_class($this)));
$c = array_keys(get_class_vars($this));
return array_diff($c, $p);
}
}
$c = new C();
var_dump($c->getFields());
Fatal error: Uncaught Error: Object of class C could not be converted to string in /in/1H9oK:13
Stack trace:
#0 /in/1H9oK(13): get_class_vars(Object(C))
#1 /in/1H9oK(20): C->getFields()
#2 {main}
thrown in /in/1H9oK on line 13
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: get_class_vars() expects parameter 1 to be string, object given in /in/1H9oK on line 13
Warning: array_keys() expects parameter 1 to be array, null given in /in/1H9oK on line 13
Warning: array_diff(): Expected parameter 1 to be an array, null given in /in/1H9oK on line 14
NULL
Warning: get_class_vars() expects parameter 1 to be string, object given in /in/1H9oK on line 13
Warning: array_keys() expects parameter 1 to be array, null given in /in/1H9oK on line 13
Warning: array_diff(): Argument #1 is not an array in /in/1H9oK on line 14
NULL
Warning: get_class_vars() expects parameter 1 to be string, object given in /in/1H9oK on line 13
Warning: array_keys(): The first argument should be an array in /in/1H9oK on line 13
Warning: array_diff(): Argument #1 is not an array in /in/1H9oK on line 14
NULL
Output for 5.0.0 - 5.0.2
Notice: Object of class C to string conversion in /in/1H9oK on line 13
Warning: array_keys(): The first argument should be an array in /in/1H9oK on line 13
Warning: array_diff(): Argument #1 is not an array in /in/1H9oK on line 14
NULL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/1H9oK on line 4
Process exited with code 255.
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/1H9oK on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/1H9oK on line 4
Process exited with code 255.