3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(-1); $a = ["b" => 2] print "notice: ".$a[b]."\n"; print "no notice: {$a[b]}";
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected 'print' (T_PRINT) in /in/FZWRL on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected '[' in /in/FZWRL on line 5
Process exited with code 255.
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167.24 ms | 1395 KiB | 53 Q