3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 'Subject: ', mb_encode_mimeheader('🎂', UTF-8', 'B');
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected '', '' (T_CONSTANT_ENCAPSED_STRING) in /in/OLaIK on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/OLaIK on line 4
Process exited with code 255.
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189.09 ms | 1399 KiB | 58 Q