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<?php class Foo { public $foo; public function &bar1() { return $this; } public function bar2($o) { $x &= $this->bar1(); $x = $o; } } $a = new Foo; $a->foo = 1; $b = new Foo; $b->foo = 2; var_dump($a->foo, $b->foo); $a->bar2($b); var_dump($a->foo, $b->foo);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(1) int(2) Warning: Undefined variable $x in /in/F08Xe on line 5 Fatal error: Uncaught TypeError: Unsupported operand types: null & Foo in /in/F08Xe:5 Stack trace: #0 /in/F08Xe(15): Foo->bar2(Object(Foo)) #1 {main} thrown in /in/F08Xe on line 5
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, 5.4.0 - 5.4.45, 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 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
int(1) int(2) Notice: Undefined variable: x in /in/F08Xe on line 5 Notice: Object of class Foo could not be converted to int in /in/F08Xe on line 5 int(1) int(2)
Output for 7.3.32 - 7.3.33, 7.4.26
int(1) int(2) int(1) int(2)
Output for 5.0.4 - 5.0.5
int(1) int(2) Notice: Undefined variable: x in /in/F08Xe on line 5 int(1) int(2)
Output for 5.0.0 - 5.0.3
int(1) int(2) Notice: Undefined variable: x in /in/F08Xe on line 5 int(1) int(2)
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/F08Xe on line 3
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/F08Xe 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/F08Xe on line 3
Process exited with code 255.
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