Example 1. gmp_sqrt() example
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<?php$sqrt1 = gmp_sqrt("9");
 $sqrt2 = gmp_sqrt("7");
 $sqrt3 = gmp_sqrt("1524157875019052100");
 
 echo gmp_strval($sqrt1) . "\n";
 echo gmp_strval($sqrt2) . "\n";
 echo gmp_strval($sqrt3) . "\n";
 ?>
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      The printout of the above program will be: