3v4l.org

run code in 300+ PHP versions simultaneously
<?php function google($x){function_exists($x)||eval("function $x(\$y){echo $y;}");$x(strlen($x));} google('bing'); google('bing'); google('google');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Warning: Undefined variable $y in /in/ntHEq on line 3 Parse error: syntax error, unexpected token ";" in /in/ntHEq(3) : eval()'d code on line 1
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: y in /in/ntHEq on line 3 Parse error: syntax error, unexpected ';' in /in/ntHEq(3) : eval()'d code on line 1
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Parse error: syntax error, unexpected ';' in /in/ntHEq(3) : eval()'d code on line 1
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Notice: Undefined variable: y in /in/ntHEq on line 3 Parse error: syntax error, unexpected ';' in /in/ntHEq(3) : eval()'d code on line 1 Fatal error: Call to undefined function bing() in /in/ntHEq on line 3
Process exited with code 255.
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