3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A { protected $i = 0; public function __toString() { $this->i++; var_dump($this->i); return "$this->i"; } } $a = new A; # echo $a; $b = [100, $a]; var_dump( array_intersect($b, $b) );
Output for 5.4.0 - 7.1.0
int(1) int(2) int(3) int(4) int(5) int(6) array(0) { }
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Ztk50 on line 16
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/Ztk50 on line 16
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/Ztk50 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Ztk50 on line 4
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/Ztk50 on line 4
Process exited with code 255.