3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { function __construct($b = NULL) { if ($b) $this->b = $b; else $this->b = new b($this); } public function test() { echo ($this->b !== NULL) ? __METHOD__.":: b not NULL\n" : __METHOD__." :: b NULL\n"; } } class b { function __construct($a = NULL) { if ($a) $this->a = $a; else $this->a = new a($this); } public function test() { ($this->a !== NULL) ? echo __METHOD__.":: a not NULL\n" : __METHOD__." :: a NULL\n"; } } new a;
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/CR22G on line 24
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_ECHO in /in/CR22G on line 24
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ECHO in /in/CR22G on line 24
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/CR22G on line 9
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/CR22G on line 9
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/CR22G on line 9
Process exited with code 255.
preferences:
220.74 ms | 1395 KiB | 117 Q