3v4l.org

run code in 300+ PHP versions simultaneously
<?php $t = 'a'; $t =. 'b'; echo $t;
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.30, 5.6.8 - 5.6.14
Parse error: syntax error, unexpected '.' in /in/fFGl3 on line 4
Process exited with code 255.

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