3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($i = 0; $i <= 62; $i += 6) { $param1 = ($i+6) - 6; $param2 =< $param1 + 6; echo "substr(".$param1.",".$param2.")<br>"; }
Output for 5.3.23, 5.4.13
Parse error: syntax error, unexpected '<' in /in/J08uV on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.22, 5.4.0 - 5.4.12
Parse error: syntax error, unexpected '<' in 4AN19 on line 5
Process exited with code 255.
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177.95 ms | 1395 KiB | 45 Q