3v4l.org

run code in 300+ PHP versions simultaneously
<?php $v = 10; echo "aa $v"; print "aa $v"; echo "aa ".$v." bb"; print "aa ".$v." bb"; echo '>',$s,'>'; print '>',$s,'>'
Output for 5.3.0 - 5.3.24, 5.4.0 - 5.4.14
Parse error: syntax error, unexpected ',' in /in/44FU0 on line 10
Process exited with code 255.
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171.1 ms | 1395 KiB | 47 Q