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<?php class LOL{ const FOO = 1; } $x = new LOL; $arr = array('x' => $x); echo $x::FOO; // works echo $arr['x']::FOO; // works too class WWW{ protected $lol; public function __construct($lol){ $this->lol= $lol; } public function doSMth(){ echo $this->lol::FOO; // fail. parse error.. wtf } } $w = new WWW; $w->doSMth();
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
11 Fatal error: Uncaught ArgumentCountError: Too few arguments to function WWW::__construct(), 0 passed in /in/jCA7p on line 26 and exactly 1 expected in /in/jCA7p:17 Stack trace: #0 /in/jCA7p(26): WWW->__construct() #1 {main} thrown in /in/jCA7p on line 17
Process exited with code 255.
Output for 7.0.0 - 7.0.20
11 Warning: Missing argument 1 for WWW::__construct(), called in /in/jCA7p on line 26 and defined in /in/jCA7p on line 17 Notice: Undefined variable: lol in /in/jCA7p on line 18 Fatal error: Uncaught Error: Class name must be a valid object or a string in /in/jCA7p:22 Stack trace: #0 /in/jCA7p(27): WWW->doSMth() #1 {main} thrown in /in/jCA7p on line 22
Process exited with code 255.
Output for 5.4.25 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '::' (T_PAAMAYIM_NEKUDOTAYIM), expecting ',' or ';' in /in/jCA7p on line 22
Process exited with code 255.
Output for 5.3.29
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM, expecting ',' or ';' in /in/jCA7p on line 22
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/jCA7p on line 4
Process exited with code 255.

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