3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($i=0; $i<=10; $1++) echo $i; }
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected '1' (T_LNUMBER), expecting variable (T_VARIABLE) or '$' in /in/NJmL2 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_LNUMBER, expecting T_VARIABLE or '$' in /in/NJmL2 on line 3
Process exited with code 255.
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176.41 ms | 1395 KiB | 58 Q