<?php
class foo
{
public $a;
public function __construct()
{
$this->$a = 'hola';
}
public function b()
{
print_r($this->$a);
}
}
$f = new foo;
$f->b();
Warning: Undefined variable $a in /in/CaKSb on line 9
Deprecated: Creation of dynamic property foo::$ is deprecated in /in/CaKSb on line 9
Warning: Undefined variable $a in /in/CaKSb on line 14
hola
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: Undefined variable $a in /in/CaKSb on line 9
Warning: Undefined variable $a in /in/CaKSb on line 14
hola
Notice: Undefined variable: a in /in/CaKSb on line 9
Notice: Undefined variable: a in /in/CaKSb on line 14
hola
Output for 5.0.0 - 5.0.4, 7.3.32 - 7.3.33, 7.4.26
hola
Output for 7.0.0 - 7.0.20
Notice: Undefined variable: a in /in/CaKSb on line 9
Fatal error: Uncaught Error: Cannot access empty property in /in/CaKSb:9
Stack trace:
#0 /in/CaKSb(18): foo->__construct()
#1 {main}
thrown in /in/CaKSb on line 9
Process exited with code 255.
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28
Notice: Undefined variable: a in /in/CaKSb on line 9
Fatal error: Cannot access empty property in /in/CaKSb on line 9
Process exited with code 255.
Fatal error: Cannot access empty property in /in/CaKSb on line 9
Process exited with code 255.
Output for 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
<br />
<b>Fatal error</b>: Cannot access empty property in <b>/in/CaKSb</b> on line <b>9</b><br />
Process exited with code 255.
Output for 4.4.2 - 4.4.9
<br />
<b>Parse error</b>: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/CaKSb</b> on line <b>5</b><br />
Process exited with code 255.
<br />
<b>Parse error</b>: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/CaKSb</b> on line <b>5</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br />
<b>Parse error</b>: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in <b>/in/CaKSb</b> on line <b>5</b><br />
Process exited with code 255.