<?php
class X { public $mark; }
$a = new X(); $a->mark = "instance1"; # in background there is a new X instance now
$b = new X(); $b->mark = "instance2"; # and another
$c &= $a;
$a = $b;
echo $a->mark . "\n";
echo $b->mark . "\n";
echo $c->mark . "\n";
Warning: Undefined variable $c in /in/tXTCg on line 7
Fatal error: Uncaught TypeError: Unsupported operand types: null & X in /in/tXTCg:7
Stack trace:
#0 {main}
thrown in /in/tXTCg on line 7
Process exited with code 255.
Notice: Undefined variable: c in /in/tXTCg on line 7
Notice: Object of class X could not be converted to int in /in/tXTCg on line 7
instance2
instance2
Notice: Trying to get property 'mark' of non-object in /in/tXTCg on line 13
Notice: Undefined variable: c in /in/tXTCg on line 7
Notice: Object of class X could not be converted to int in /in/tXTCg on line 7
instance2
instance2
Notice: Trying to get property of non-object in /in/tXTCg on line 13
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: c in /in/tXTCg on line 7
instance2
instance2
Notice: Trying to get property of non-object in /in/tXTCg on line 13
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: c in /in/tXTCg on line 7
instance2
instance2
Notice: Trying to get property of non-object in /in/tXTCg on line 13
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/tXTCg on line 3
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/tXTCg on line 3
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/tXTCg on line 3
Process exited with code 255.