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  1. <?php
  2.  
  3. var_dump("VocĂȘ nasceu em 2017" - 20);
  4.  
  5. var_dump(PHP_VERSION);
  6.  
Success #stdin #stdout #stderr 0.01s 82880KB
stdin
Standard input is empty
stdout
int(-20)
string(7) "7.1.1-1"
stderr
PHP Warning:  A non-numeric value encountered in /home/p2xqQf/prog.php on line 3