3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'a' $result = ''; for ($i = 0; $i < 5; $i++) { $a++; $result += $a; } echo $result;
Output for 5.4.0 - 5.4.24
Parse error: syntax error, unexpected '$result' (T_VARIABLE) in /in/O2YG4 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_VARIABLE in /in/O2YG4 on line 3
Process exited with code 255.
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176.11 ms | 1395 KiB | 61 Q