3v4l.org

run code in 300+ PHP versions simultaneously
<?php class aTest{} class bTest{} $x = new bTest(); if (! $x instanceof aTest) echo 'not a' else echo 'a'; if (! $x instanceof bTest) echo 'not b' else echo 'b';
Output for 5.4.0 - 5.4.9
Parse error: syntax error, unexpected 'else' (T_ELSE), expecting ',' or ';' in /in/O2jH7 on line 8
Process exited with code 255.
Output for 5.3.0 - 5.3.19
Parse error: syntax error, unexpected T_ELSE, expecting ',' or ';' in /in/O2jH7 on line 8
Process exited with code 255.
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