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  1. <?php
  2. var_dump(pow(16, 0));
  3. var_dump(pow(0, 0));
  4. var_dump(16 ** 0);
  5. var_dump(0 ** 0);
Success #stdin #stdout 0.03s 23616KB
stdin
Standard input is empty
stdout
int(1)
int(1)
int(1)
int(1)