3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var1=1; $var2=0; $var3=2; $var4=-1; $prefix="var"; for ($i=1;$i<=4;$i++) echo $$prefix$i;
Output for 5.4.0 - 5.4.20, 5.5.0 - 5.5.4
Parse error: syntax error, unexpected '$i' (T_VARIABLE), expecting ',' or ';' in /in/QRdvB on line 9
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_VARIABLE, expecting ',' or ';' in /in/QRdvB on line 9
Process exited with code 255.
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177.15 ms | 1395 KiB | 61 Q