3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { private $fn; public function __construct() { $this->fn = $this->foo; } public function go() { $this->fn(); } private foo() { echo "foo!\n"; } } $foo = new Foo(); $foo->go();
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected 'foo' (T_STRING), expecting variable (T_VARIABLE) in /in/RXWXL on line 12
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE in /in/RXWXL on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING, expecting T_VARIABLE in /in/RXWXL on line 12
Process exited with code 255.
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/RXWXL on line 5
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/RXWXL on line 5
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/RXWXL on line 5
Process exited with code 255.
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