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run code in 300+ PHP versions simultaneously
<?php class a { static public function o() { return true;} } $cls = [ a::o(), 'a::o','strpos::test' , 'strlen', function(){}, null]; foreach($cls as $cl) { var_dump(is_callable($cl)); var_dump(is_callable($cl,true)); var_dump($cl instanceof Closure); }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 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 - 8.3.7
bool(false) bool(false) bool(false) bool(true) bool(true) bool(false) bool(false) bool(true) bool(false) bool(true) bool(true) bool(false) bool(true) bool(true) bool(true) bool(false) bool(false) bool(false)
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/SpQG2 on line 10
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/SpQG2 on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/SpQG2 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_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/SpQG2 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/SpQG2 on line 5
Process exited with code 255.

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