3v4l.org

run code in 300+ PHP versions simultaneously
<?php $record_1 = 1; $i = '_1' echo ${'record'.$i};
Output for 5.4.0 - 5.4.23
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/u6njU on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_ECHO in /in/u6njU on line 7
Process exited with code 255.
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180.56 ms | 1395 KiB | 60 Q